1649560896 has 112 divisors (see below), whose sum is σ = 4877409600. Its totient is φ = 546679296.

The previous prime is 1649560889. The next prime is 1649560903. The reversal of 1649560896 is 6980659461.

It is a happy number.

1649560896 is a `hidden beast` number, since 1 + 6 + 495 + 60 + 8 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (1649560889) and next prime (1649560903).

It is a super-2 number, since 2×1649560896² = 5442102299224645632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306646 + ... + 311978.

It is an arithmetic number, because the mean of its divisors is an integer number (43548300).

Almost surely, 2^1649560896 is an apocalyptic number.

1649560896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1649560896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2438704800).

1649560896 is an abundant number, since it is smaller than the sum of its proper divisors (3227848704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1649560896 is a wasteful number, since it uses less digits than its factorization.

1649560896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 1649560896 is about 40614.7866669271. The cubic root of 1649560896 is about 1181.5609181053.

The spelling of 1649560896 in words is "one billion, six hundred forty-nine million, five hundred sixty thousand, eight hundred ninety-six".