1656101265 has 96 divisors (see below), whose sum is σ = 3335665536. Its totient is φ = 695439360.

The previous prime is 1656101221. The next prime is 1656101281. The reversal of 1656101265 is 5621016561.

It is not a de Polignac number, because 1656101265 - 2¹² = 1656097169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3372670 + ... + 3373160.

It is an arithmetic number, because the mean of its divisors is an integer number (34746516).

Almost surely, 2^1656101265 is an apocalyptic number.

1656101265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1656101265 is an abundant number, since it is smaller than the sum of its proper divisors (1679564271).

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

1656101265 is a wasteful number, since it uses less digits than its factorization.

1656101265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 872 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1656101265 is about 40695.2241055385. The cubic root of 1656101265 is about 1183.1204550385.

The spelling of 1656101265 in words is "one billion, six hundred fifty-six million, one hundred one thousand, two hundred sixty-five".