2156925530 has 16 divisors (see below), whose sum is σ = 3891317760. Its totient is φ = 860803152.

The previous prime is 2156925523. The next prime is 2156925539. The reversal of 2156925530 is 355296512.

It is not an unprimeable number, because it can be changed into a prime (2156925539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241274 + ... + 250053.

It is an arithmetic number, because the mean of its divisors is an integer number (243207360).

Almost surely, 2^2156925530 is an apocalyptic number.

2156925530 is a deficient number, since it is larger than the sum of its proper divisors (1734392230).

2156925530 is a wasteful number, since it uses less digits than its factorization.

2156925530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491773.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 2156925530 is about 46442.7123454262. The cubic root of 2156925530 is about 1292.0472130951.

The spelling of 2156925530 in words is "two billion, one hundred fifty-six million, nine hundred twenty-five thousand, five hundred thirty".