1379157138 has 32 divisors (see below), whose sum is σ = 3080862720. Its totient is φ = 457308720.

The previous prime is 1379157107. The next prime is 1379157151. The reversal of 1379157138 is 8317519731.

1379157138 is a `hidden beast` number, since 1 + 3 + 79 + 1 + 571 + 3 + 8 = 666.

It is a super-2 number, since 2×1379157138² = 3804148822592702088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1379157093 and 1379157102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56545 + ... + 77172.

It is an arithmetic number, because the mean of its divisors is an integer number (96276960).

Almost surely, 2^1379157138 is an apocalyptic number.

1379157138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1379157138 is an abundant number, since it is smaller than the sum of its proper divisors (1701705582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1379157138 is a wasteful number, since it uses less digits than its factorization.

1379157138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133919 (or 133913 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 1379157138 is about 37137.0049680908. The cubic root of 1379157138 is about 1113.1095713866.

The spelling of 1379157138 in words is "one billion, three hundred seventy-nine million, one hundred fifty-seven thousand, one hundred thirty-eight".