1218152452 has 24 divisors (see below), whose sum is σ = 2326457952. Its totient is φ = 553492800.

The previous prime is 1218152449. The next prime is 1218152483. The reversal of 1218152452 is 2542518121.

It is a super-2 number, since 2×1218152452² = 2967790792627224608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195952 + ... + 202072.

It is an arithmetic number, because the mean of its divisors is an integer number (96935748).

Almost surely, 2^1218152452 is an apocalyptic number.

It is an amenable number.

1218152452 is a deficient number, since it is larger than the sum of its proper divisors (1108305500).

1218152452 is a wasteful number, since it uses less digits than its factorization.

1218152452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659 (or 10657 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 1218152452 is about 34902.0407999303. The cubic root of 1218152452 is about 1067.9900696707.

The spelling of 1218152452 in words is "one billion, two hundred eighteen million, one hundred fifty-two thousand, four hundred fifty-two".