1657105112 has 16 divisors (see below), whose sum is σ = 3346077840. Its totient is φ = 764817696.

The previous prime is 1657105069. The next prime is 1657105117. The reversal of 1657105112 is 2115017561.

It is a super-4 number, since 4×1657105112⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1657105117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7966748 + ... + 7966955.

It is an arithmetic number, because the mean of its divisors is an integer number (209129865).

Almost surely, 2^1657105112 is an apocalyptic number.

It is an amenable number.

1657105112 is an abundant number, since it is smaller than the sum of its proper divisors (1688972728).

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

1657105112 is a wasteful number, since it uses less digits than its factorization.

1657105112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15933722 (or 15933718 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 29.

The square root of 1657105112 is about 40707.5559570947. Note that the first 3 decimals coincide. The cubic root of 1657105112 is about 1183.3594565328.

The spelling of 1657105112 in words is "one billion, six hundred fifty-seven million, one hundred five thousand, one hundred twelve".