1022155972 has 12 divisors (see below), whose sum is σ = 1866545856. Its totient is φ = 488857160.

The previous prime is 1022155961. The next prime is 1022155997. The reversal of 1022155972 is 2795512201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555104 + ... + 5555287.

It is an arithmetic number, because the mean of its divisors is an integer number (155545488).

Almost surely, 2^1022155972 is an apocalyptic number.

It is an amenable number.

1022155972 is a deficient number, since it is larger than the sum of its proper divisors (844389884).

1022155972 is a wasteful number, since it uses less digits than its factorization.

1022155972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110418 (or 11110416 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 1022155972 is about 31971.1740791607. The cubic root of 1022155972 is about 1007.3314425943.

The spelling of 1022155972 in words is "one billion, twenty-two million, one hundred fifty-five thousand, nine hundred seventy-two".