1972884918 has 32 divisors (see below), whose sum is σ = 4290797664. Its totient is φ = 602214912.

The previous prime is 1972884917. The next prime is 1972884937. The reversal of 1972884918 is 8194882791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972884917) 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, 257605 + ... + 265152.

It is an arithmetic number, because the mean of its divisors is an integer number (134087427).

Almost surely, 2^1972884918 is an apocalyptic number.

1972884918 is an abundant number, since it is smaller than the sum of its proper divisors (2317912746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1972884918 is a wasteful number, since it uses less digits than its factorization.

1972884918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522816.

The product of its digits is 2322432, while the sum is 57.

The square root of 1972884918 is about 44417.1691803969. The cubic root of 1972884918 is about 1254.2013125315.

The spelling of 1972884918 in words is "one billion, nine hundred seventy-two million, eight hundred eighty-four thousand, nine hundred eighteen".