1657671044 has 24 divisors (see below), whose sum is σ = 2924347608. Its totient is φ = 822170880.

The previous prime is 1657671031. The next prime is 1657671061. The reversal of 1657671044 is 4401767561.

It can be written as a sum of positive squares in 4 ways, for example, as 6061444 + 1651609600 = 2462^2 + 40640^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1657670992 and 1657671010.

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 7 ways as a sum of consecutive naturals, for example, 254954 + ... + 261374.

It is an arithmetic number, because the mean of its divisors is an integer number (121847817).

Almost surely, 2^1657671044 is an apocalyptic number.

It is an amenable number.

1657671044 is a deficient number, since it is larger than the sum of its proper divisors (1266676564).

1657671044 is a wasteful number, since it uses less digits than its factorization.

1657671044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935 (or 6933 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1657671044 is about 40714.5065547895. The cubic root of 1657671044 is about 1183.4941542365.

The spelling of 1657671044 in words is "one billion, six hundred fifty-seven million, six hundred seventy-one thousand, forty-four".