1122078879 has 16 divisors (see below), whose sum is σ = 1662950400. Its totient is φ = 747777528.

The previous prime is 1122078871. The next prime is 1122078887. The reversal of 1122078879 is 9788702211.

It is an interprime number because it is at equal distance from previous prime (1122078871) and next prime (1122078887).

It is not a de Polignac number, because 1122078879 - 2³ = 1122078871 is a prime.

It is a super-2 number, since 2×1122078879² = 2518122021395793282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122078871) 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, 89682 + ... + 101424.

It is an arithmetic number, because the mean of its divisors is an integer number (103934400).

Almost surely, 2^1122078879 is an apocalyptic number.

1122078879 is a deficient number, since it is larger than the sum of its proper divisors (540871521).

1122078879 is a wasteful number, since it uses less digits than its factorization.

1122078879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15291 (or 15285 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 1122078879 is about 33497.4458578561. The cubic root of 1122078879 is about 1039.1409569818.

The spelling of 1122078879 in words is "one billion, one hundred twenty-two million, seventy-eight thousand, eight hundred seventy-nine".