2157130600 has 48 divisors (see below), whose sum is σ = 5022273420. Its totient is φ = 861657600.

The previous prime is 2157130541. The next prime is 2157130603. The reversal of 2157130600 is 60317512.

It can be written as a sum of positive squares in 6 ways, for example, as 465782724 + 1691347876 = 21582^2 + 41126^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (2157130603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145114 + ... + 159286.

Almost surely, 2^2157130600 is an apocalyptic number.

2157130600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157130600 is an abundant number, since it is smaller than the sum of its proper divisors (2865142820).

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

2157130600 is a wasteful number, since it uses less digits than its factorization.

2157130600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14950 (or 14941 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 2157130600 is about 46444.9200666768. The cubic root of 2157130600 is about 1292.0881589880.

The spelling of 2157130600 in words is "two billion, one hundred fifty-seven million, one hundred thirty thousand, six hundred".