1213181882 has 64 divisors (see below), whose sum is σ = 2215382400. Its totient is φ = 491904000.

The previous prime is 1213181857. The next prime is 1213181887. The reversal of 1213181882 is 2881813121.

It is not an unprimeable number, because it can be changed into a prime (1213181887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495782 + ... + 498222.

It is an arithmetic number, because the mean of its divisors is an integer number (34615350).

Almost surely, 2^1213181882 is an apocalyptic number.

1213181882 is a deficient number, since it is larger than the sum of its proper divisors (1002200518).

1213181882 is a wasteful number, since it uses less digits than its factorization.

1213181882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2543.

The product of its digits is 6144, while the sum is 35.

The square root of 1213181882 is about 34830.7605716556. The cubic root of 1213181882 is about 1066.5354744683.

The spelling of 1213181882 in words is "one billion, two hundred thirteen million, one hundred eighty-one thousand, eight hundred eighty-two".