2161637602 has 32 divisors (see below), whose sum is σ = 3357535104. Its totient is φ = 1043280000.

The previous prime is 2161637593. The next prime is 2161637609. The reversal of 2161637602 is 2067361612.

It is a happy number.

2161637602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2161637609) 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, 2234923 + ... + 2235889.

It is an arithmetic number, because the mean of its divisors is an integer number (104922972).

Almost surely, 2^2161637602 is an apocalyptic number.

2161637602 is a deficient number, since it is larger than the sum of its proper divisors (1195897502).

2161637602 is a wasteful number, since it uses less digits than its factorization.

2161637602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 2161637602 is about 46493.4146089530. The cubic root of 2161637602 is about 1292.9874080305.

The spelling of 2161637602 in words is "two billion, one hundred sixty-one million, six hundred thirty-seven thousand, six hundred two".