2156613610 has 32 divisors (see below), whose sum is σ = 3960934992. Its totient is φ = 845260800.

The previous prime is 2156613587. The next prime is 2156613617. The reversal of 2156613610 is 163166512.

It can be written as a sum of positive squares in 8 ways, for example, as 1678622841 + 477990769 = 40971^2 + 21863^2 .

It is not an unprimeable number, because it can be changed into a prime (2156613617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86964 + ... + 108976.

Almost surely, 2^2156613610 is an apocalyptic number.

2156613610 is a deficient number, since it is larger than the sum of its proper divisors (1804321382).

2156613610 is a wasteful number, since it uses less digits than its factorization.

2156613610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22218.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2156613610 is about 46439.3541083422. The cubic root of 2156613610 is about 1291.9849277125.

The spelling of 2156613610 in words is "two billion, one hundred fifty-six million, six hundred thirteen thousand, six hundred ten".