1357817652 has 18 divisors (see below), whose sum is σ = 3432261378. Its totient is φ = 452605872.

The previous prime is 1357817647. The next prime is 1357817683. The reversal of 1357817652 is 2567187531.

It is a happy number.

1357817652 is a `hidden beast` number, since 1 + 3 + 578 + 1 + 76 + 5 + 2 = 666.

1357817652 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 973814436 + 384003216 = 31206^2 + 19596^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1357817598 and 1357817607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18858543 + ... + 18858614.

Almost surely, 2^1357817652 is an apocalyptic number.

1357817652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1357817652 is an abundant number, since it is smaller than the sum of its proper divisors (2074443726).

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

1357817652 is a wasteful number, since it uses less digits than its factorization.

1357817652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37717167 (or 37717162 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 1357817652 is about 36848.5773402448. The cubic root of 1357817652 is about 1107.3387133896.

The spelling of 1357817652 in words is "one billion, three hundred fifty-seven million, eight hundred seventeen thousand, six hundred fifty-two".