1812318152 has 8 divisors (see below), whose sum is σ = 3398096550. Its totient is φ = 906159072.

The previous prime is 1812318103. The next prime is 1812318161. The reversal of 1812318152 is 2518132181.

It can be written as a sum of positive squares in only one way, i.e., 1765176196 + 47141956 = 42014^2 + 6866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113269877 + ... + 113269892.

Almost surely, 2^1812318152 is an apocalyptic number.

It is an amenable number.

1812318152 is a deficient number, since it is larger than the sum of its proper divisors (1585778398).

1812318152 is a wasteful number, since it uses less digits than its factorization.

1812318152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226539775 (or 226539771 counting only the distinct ones).

The product of its digits is 3840, while the sum is 32.

The square root of 1812318152 is about 42571.3301647952. The cubic root of 1812318152 is about 1219.2089631571.

The spelling of 1812318152 in words is "one billion, eight hundred twelve million, three hundred eighteen thousand, one hundred fifty-two".