1357488961 has 4 divisors (see below), whose sum is σ = 1365335892. Its totient is φ = 1349642032.

The previous prime is 1357488931. The next prime is 1357488971. The reversal of 1357488961 is 1698847531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1698847531 = 53 ⋅32053727.

It can be written as a sum of positive squares in 2 ways, for example, as 1320959025 + 36529936 = 36345^2 + 6044^2 .

It is a cyclic number.

It is not a de Polignac number, because 1357488961 - 2⁵ = 1357488929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1357488899 and 1357488908.

It is not an unprimeable number, because it can be changed into a prime (1357488931) 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, 3923206 + ... + 3923551.

It is an arithmetic number, because the mean of its divisors is an integer number (341333973).

Almost surely, 2^1357488961 is an apocalyptic number.

It is an amenable number.

1357488961 is a deficient number, since it is larger than the sum of its proper divisors (7846931).

1357488961 is an equidigital number, since it uses as much as digits as its factorization.

1357488961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7846930.

The product of its digits is 1451520, while the sum is 52.

The square root of 1357488961 is about 36844.1170473659. The cubic root of 1357488961 is about 1107.2493539085.

The spelling of 1357488961 in words is "one billion, three hundred fifty-seven million, four hundred eighty-eight thousand, nine hundred sixty-one".