1118157412 has 24 divisors (see below), whose sum is σ = 2025195480. Its totient is φ = 539811840.

The previous prime is 1118157407. The next prime is 1118157419. The reversal of 1118157412 is 2147518111.

It can be written as a sum of positive squares in 4 ways, for example, as 209496676 + 908660736 = 14474^2 + 30144^2 .

It is not an unprimeable number, because it can be changed into a prime (1118157419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19237 + ... + 51052.

It is an arithmetic number, because the mean of its divisors is an integer number (84383145).

Almost surely, 2^1118157412 is an apocalyptic number.

It is an amenable number.

1118157412 is a deficient number, since it is larger than the sum of its proper divisors (907038068).

1118157412 is a wasteful number, since it uses less digits than its factorization.

1118157412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70431 (or 70429 counting only the distinct ones).

The product of its digits is 2240, while the sum is 31.

The square root of 1118157412 is about 33438.8608059545. The cubic root of 1118157412 is about 1037.9290061496.

The spelling of 1118157412 in words is "one billion, one hundred eighteen million, one hundred fifty-seven thousand, four hundred twelve".