1391518113 has 8 divisors (see below), whose sum is σ = 1856335008. Its totient is φ = 927189984.

The previous prime is 1391518103. The next prime is 1391518129. The reversal of 1391518113 is 3118151931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1391518113 - 2⁴ = 1391518097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1391518103) 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, 115495 + ... + 126972.

It is an arithmetic number, because the mean of its divisors is an integer number (232041876).

Almost surely, 2^1391518113 is an apocalyptic number.

It is an amenable number.

1391518113 is a deficient number, since it is larger than the sum of its proper divisors (464816895).

1391518113 is a wasteful number, since it uses less digits than its factorization.

1391518113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244383.

The product of its digits is 3240, while the sum is 33.

The square root of 1391518113 is about 37303.0576896854. The cubic root of 1391518113 is about 1116.4251753819.

The spelling of 1391518113 in words is "one billion, three hundred ninety-one million, five hundred eighteen thousand, one hundred thirteen".