2120636164 has 6 divisors (see below), whose sum is σ = 3711113294. Its totient is φ = 1060318080.

The previous prime is 2120636129. The next prime is 2120636173. The reversal of 2120636164 is 4616360212.

It can be written as a sum of positive squares in only one way, i.e., 2082096900 + 38539264 = 45630^2 + 6208^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265079517 + ... + 265079524.

Almost surely, 2^2120636164 is an apocalyptic number.

It is an amenable number.

2120636164 is a deficient number, since it is larger than the sum of its proper divisors (1590477130).

2120636164 is a wasteful number, since it uses less digits than its factorization.

2120636164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530159045 (or 530159043 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2120636164 is about 46050.3655142932. The cubic root of 2120636164 is about 1284.7601411532.

Adding to 2120636164 its reverse (4616360212), we get a palindrome (6736996376).

The spelling of 2120636164 in words is "two billion, one hundred twenty million, six hundred thirty-six thousand, one hundred sixty-four".