1972938608 has 20 divisors (see below), whose sum is σ = 3826756560. Its totient is φ = 985388544.

The previous prime is 1972938607. The next prime is 1972938613. The reversal of 1972938608 is 8068392791.

It is a self number, because there is not a number n which added to its sum of digits gives 1972938608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972938601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52385 + ... + 81792.

It is an arithmetic number, because the mean of its divisors is an integer number (191337828).

Almost surely, 2^1972938608 is an apocalyptic number.

It is an amenable number.

1972938608 is a deficient number, since it is larger than the sum of its proper divisors (1853817952).

1972938608 is a wasteful number, since it uses less digits than its factorization.

1972938608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135104 (or 135098 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 1972938608 is about 44417.7735596912. The cubic root of 1972938608 is about 1254.2126896873.

The spelling of 1972938608 in words is "one billion, nine hundred seventy-two million, nine hundred thirty-eight thousand, six hundred eight".