2164525730 has 32 divisors (see below), whose sum is σ = 3923478000. Its totient is φ = 859758592.

The previous prime is 2164525721. The next prime is 2164525763. The reversal of 2164525730 is 375254612.

It can be written as a sum of positive squares in 8 ways, for example, as 363626761 + 1800898969 = 19069^2 + 42437^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1045136 + ... + 1047204.

Almost surely, 2^2164525730 is an apocalyptic number.

2164525730 is a deficient number, since it is larger than the sum of its proper divisors (1758952270).

2164525730 is a wasteful number, since it uses less digits than its factorization.

2164525730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 2164525730 is about 46524.4637798223. The cubic root of 2164525730 is about 1293.5629980752.

The spelling of 2164525730 in words is "two billion, one hundred sixty-four million, five hundred twenty-five thousand, seven hundred thirty".