1391518112 has 12 divisors (see below), whose sum is σ = 2739551346. Its totient is φ = 695759040.

The previous prime is 1391518103. The next prime is 1391518129. The reversal of 1391518112 is 2118151931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1327582096 + 63936016 = 36436^2 + 7996^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 43484941 = 1391518112 / (1 + 3 + 9 + 1 + 5 + 1 + 8 + 1 + 1 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21742439 + ... + 21742502.

Almost surely, 2^1391518112 is an apocalyptic number.

It is an amenable number.

1391518112 is a deficient number, since it is larger than the sum of its proper divisors (1348033234).

1391518112 is an equidigital number, since it uses as much as digits as its factorization.

1391518112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43484951 (or 43484943 counting only the distinct ones).

The product of its digits is 2160, while the sum is 32.

The square root of 1391518112 is about 37303.0576762817. The cubic root of 1391518112 is about 1116.4251751145.

The spelling of 1391518112 in words is "one billion, three hundred ninety-one million, five hundred eighteen thousand, one hundred twelve".