1636772252 has 24 divisors (see below), whose sum is σ = 3064543440. Its totient is φ = 762600960.

The previous prime is 1636772251. The next prime is 1636772261. The reversal of 1636772252 is 2522776361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1636772251) 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, 171893 + ... + 181164.

It is an arithmetic number, because the mean of its divisors is an integer number (127689310).

Almost surely, 2^1636772252 is an apocalyptic number.

It is an amenable number.

1636772252 is a deficient number, since it is larger than the sum of its proper divisors (1427771188).

1636772252 is a wasteful number, since it uses less digits than its factorization.

1636772252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353141 (or 353139 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 1636772252 is about 40457.0420569769. The cubic root of 1636772252 is about 1178.4995416810.

The spelling of 1636772252 in words is "one billion, six hundred thirty-six million, seven hundred seventy-two thousand, two hundred fifty-two".