1356891357 has 4 divisors (see below), whose sum is σ = 1809188480. Its totient is φ = 904594236.

The previous prime is 1356891337. The next prime is 1356891373. The reversal of 1356891357 is 7531986531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1356891357 - 2¹⁴ = 1356874973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356891337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226148557 + ... + 226148562.

It is an arithmetic number, because the mean of its divisors is an integer number (452297120).

Almost surely, 2^1356891357 is an apocalyptic number.

It is an amenable number.

1356891357 is a deficient number, since it is larger than the sum of its proper divisors (452297123).

1356891357 is an equidigital number, since it uses as much as digits as its factorization.

1356891357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452297122.

The product of its digits is 680400, while the sum is 48.

The square root of 1356891357 is about 36836.0062574650. The cubic root of 1356891357 is about 1107.0868495138.

The spelling of 1356891357 in words is "one billion, three hundred fifty-six million, eight hundred ninety-one thousand, three hundred fifty-seven".