1649337888 has 96 divisors (see below), whose sum is σ = 4875558912. Its totient is φ = 483667200.

The previous prime is 1649337847. The next prime is 1649337901. The reversal of 1649337888 is 8887339461.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7545 + ... + 57927.

It is an arithmetic number, because the mean of its divisors is an integer number (50787072).

Almost surely, 2^1649337888 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 1649337888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437779456).

1649337888 is an abundant number, since it is smaller than the sum of its proper divisors (3226221024).

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

1649337888 is a wasteful number, since it uses less digits than its factorization.

1649337888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50438 (or 50430 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 1649337888 is about 40612.0411700766. The cubic root of 1649337888 is about 1181.5076697100.

The spelling of 1649337888 in words is "one billion, six hundred forty-nine million, three hundred thirty-seven thousand, eight hundred eighty-eight".