1357396605 has 24 divisors (see below), whose sum is σ = 2353930488. Its totient is φ = 723603456.

The previous prime is 1357396561. The next prime is 1357396631. The reversal of 1357396605 is 5066937531.

1357396605 is a `hidden beast` number, since 1 + 3 + 5 + 7 + 39 + 6 + 605 = 666.

1357396605 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 4 ways, for example, as 273538521 + 1083858084 = 16539^2 + 32922^2 .

It is not a de Polignac number, because 1357396605 - 2⁷ = 1357396477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110869 + ... + 122501.

It is an arithmetic number, because the mean of its divisors is an integer number (98080437).

Almost surely, 2^1357396605 is an apocalyptic number.

1357396605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1357396605 is a deficient number, since it is larger than the sum of its proper divisors (996533883).

1357396605 is a wasteful number, since it uses less digits than its factorization.

1357396605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14237 (or 14234 counting only the distinct ones).

The product of its (nonzero) digits is 510300, while the sum is 45.

The square root of 1357396605 is about 36842.8636916296. The cubic root of 1357396605 is about 1107.2242429761.

The spelling of 1357396605 in words is "one billion, three hundred fifty-seven million, three hundred ninety-six thousand, six hundred five".