2174857156 has 12 divisors (see below), whose sum is σ = 3868393900. Its totient is φ = 1069601760.

The previous prime is 2174857147. The next prime is 2174857159. The reversal of 2174857156 is 6517584712.

It can be written as a sum of positive squares in 2 ways, for example, as 1178823556 + 996033600 = 34334^2 + 31560^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2174857159) 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, 4456431 + ... + 4456918.

Almost surely, 2^2174857156 is an apocalyptic number.

It is an amenable number.

2174857156 is a deficient number, since it is larger than the sum of its proper divisors (1693536744).

2174857156 is a wasteful number, since it uses less digits than its factorization.

2174857156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8913414 (or 8913412 counting only the distinct ones).

The product of its digits is 470400, while the sum is 46.

The square root of 2174857156 is about 46635.3637918694. The cubic root of 2174857156 is about 1295.6178198207.

The spelling of 2174857156 in words is "two billion, one hundred seventy-four million, eight hundred fifty-seven thousand, one hundred fifty-six".