1218992022 has 24 divisors (see below), whose sum is σ = 2666795664. Its totient is φ = 402385104.

The previous prime is 1218992011. The next prime is 1218992057. The reversal of 1218992022 is 2202998121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326893 + ... + 330600.

It is an arithmetic number, because the mean of its divisors is an integer number (111116486).

Almost surely, 2^1218992022 is an apocalyptic number.

1218992022 is an abundant number, since it is smaller than the sum of its proper divisors (1447803642).

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

1218992022 is a wasteful number, since it uses less digits than its factorization.

1218992022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657604 (or 657601 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1218992022 is about 34914.0662484335. The cubic root of 1218992022 is about 1068.2353718916.

The spelling of 1218992022 in words is "one billion, two hundred eighteen million, nine hundred ninety-two thousand, twenty-two".