1357317738 has 36 divisors (see below), whose sum is σ = 3420996930. Its totient is φ = 387804816.

The previous prime is 1357317727. The next prime is 1357317809. The reversal of 1357317738 is 8377137531.

1357317738 is a `hidden beast` number, since 1 + 3 + 573 + 1 + 7 + 73 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1324450449 + 32867289 = 36393^2 + 5733^2 .

It is a super-2 number, since 2×1357317738² = 3684622883778873288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1357317693 and 1357317702.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 768573 + ... + 770336.

Almost surely, 2^1357317738 is an apocalyptic number.

1357317738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1357317738 is an abundant number, since it is smaller than the sum of its proper divisors (2063679192).

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

1357317738 is a wasteful number, since it uses less digits than its factorization.

1357317738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538931 (or 1538921 counting only the distinct ones).

The product of its digits is 370440, while the sum is 45.

The square root of 1357317738 is about 36841.7933602587. The cubic root of 1357317738 is about 1107.2027987042.

The spelling of 1357317738 in words is "one billion, three hundred fifty-seven million, three hundred seventeen thousand, seven hundred thirty-eight".