1357245381 has 12 divisors (see below), whose sum is σ = 1840866752. Its totient is φ = 889487304.

The previous prime is 1357245349. The next prime is 1357245457. The reversal of 1357245381 is 1835427531.

It is a happy number.

It is not a de Polignac number, because 1357245381 - 2⁵ = 1357245349 is a prime.

It is a super-2 number, since 2×1357245381² = 3684230048491670322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357241381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54541 + ... + 75426.

Almost surely, 2^1357245381 is an apocalyptic number.

It is an amenable number.

1357245381 is a deficient number, since it is larger than the sum of its proper divisors (483621371).

1357245381 is an equidigital number, since it uses as much as digits as its factorization.

1357245381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130088 (or 130029 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 1357245381 is about 36840.8113510004. The cubic root of 1357245381 is about 1107.1831237983.

The spelling of 1357245381 in words is "one billion, three hundred fifty-seven million, two hundred forty-five thousand, three hundred eighty-one".