1649609496 has 128 divisors (see below), whose sum is σ = 4806144000. Its totient is φ = 523252224.

The previous prime is 1649609491. The next prime is 1649609503. The reversal of 1649609496 is 6949069461.

1649609496 is a `hidden beast` number, since 1 + 64 + 96 + 0 + 9 + 496 = 666.

It is a super-2 number, since 2×1649609496² = 5442422978586748032, 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 not an unprimeable number, because it can be changed into a prime (1649609491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107120 + ... + 1108608.

It is an arithmetic number, because the mean of its divisors is an integer number (37548000).

Almost surely, 2^1649609496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1649609496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403072000).

1649609496 is an abundant number, since it is smaller than the sum of its proper divisors (3156534504).

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

1649609496 is a wasteful number, since it uses less digits than its factorization.

1649609496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750 (or 1740 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 1649609496 is about 40615.3849667832. The cubic root of 1649609496 is about 1181.5725218594.

The spelling of 1649609496 in words is "one billion, six hundred forty-nine million, six hundred nine thousand, four hundred ninety-six".