1357138943 has 8 divisors (see below), whose sum is σ = 1436092416. Its totient is φ = 1279847800.

The previous prime is 1357138933. The next prime is 1357138949. The reversal of 1357138943 is 3498317531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1357138943 - 2⁶ = 1357138879 is a prime.

It is a super-2 number, since 2×1357138943² = 3683652221214314498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1357138894 and 1357138903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357138949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413903 + ... + 417168.

It is an arithmetic number, because the mean of its divisors is an integer number (179511552).

Almost surely, 2^1357138943 is an apocalyptic number.

1357138943 is a deficient number, since it is larger than the sum of its proper divisors (78953473).

1357138943 is an equidigital number, since it uses as much as digits as its factorization.

1357138943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831165.

The product of its digits is 272160, while the sum is 44.

The square root of 1357138943 is about 36839.3667562297. The cubic root of 1357138943 is about 1107.1541805087.

The spelling of 1357138943 in words is "one billion, three hundred fifty-seven million, one hundred thirty-eight thousand, nine hundred forty-three".