2107856164 has 6 divisors (see below), whose sum is σ = 3688748294. Its totient is φ = 1053928080.

The previous prime is 2107856161. The next prime is 2107856171. The reversal of 2107856164 is 4616587012.

It can be written as a sum of positive squares in only one way, i.e., 1625702400 + 482153764 = 40320^2 + 21958^2 .

It is a super-2 number, since 2×2107856164² = 8886115216225589792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2107856161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263482017 + ... + 263482024.

Almost surely, 2^2107856164 is an apocalyptic number.

It is an amenable number.

2107856164 is a deficient number, since it is larger than the sum of its proper divisors (1580892130).

2107856164 is a wasteful number, since it uses less digits than its factorization.

2107856164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526964045 (or 526964043 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2107856164 is about 45911.3947076322. The cubic root of 2107856164 is about 1282.1740729991.

The spelling of 2107856164 in words is "two billion, one hundred seven million, eight hundred fifty-six thousand, one hundred sixty-four".