1357661923 has 2 divisors, whose sum is σ = 1357661924. Its totient is φ = 1357661922.

The previous prime is 1357661909. The next prime is 1357661927. The reversal of 1357661923 is 3291667531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1357661923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1357661923.

It is not a weakly prime, because it can be changed into another prime (1357661927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678830961 + 678830962.

It is an arithmetic number, because the mean of its divisors is an integer number (678830962).

Almost surely, 2^1357661923 is an apocalyptic number.

1357661923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1357661923 is an equidigital number, since it uses as much as digits as its factorization.

1357661923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 1357661923 is about 36846.4641858619. The cubic root of 1357661923 is about 1107.2963779691.

The spelling of 1357661923 in words is "one billion, three hundred fifty-seven million, six hundred sixty-one thousand, nine hundred twenty-three".