2156472670 has 64 divisors (see below), whose sum is σ = 4311014400. Its totient is φ = 770133760.

The previous prime is 2156472649. The next prime is 2156472673. The reversal of 2156472670 is 762746512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156472673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1634271 + ... + 1635589.

It is an arithmetic number, because the mean of its divisors is an integer number (67359600).

Almost surely, 2^2156472670 is an apocalyptic number.

2156472670 is a deficient number, since it is larger than the sum of its proper divisors (2154541730).

2156472670 is a wasteful number, since it uses less digits than its factorization.

2156472670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 2156472670 is about 46437.8366205834. The cubic root of 2156472670 is about 1291.9567823026.

The spelling of 2156472670 in words is "two billion, one hundred fifty-six million, four hundred seventy-two thousand, six hundred seventy".