1357678923 has 4 divisors (see below), whose sum is σ = 1810238568. Its totient is φ = 905119280.

The previous prime is 1357678849. The next prime is 1357678943. The reversal of 1357678923 is 3298767531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1357678923 - 2⁹ = 1357678411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1357678943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226279818 + ... + 226279823.

It is an arithmetic number, because the mean of its divisors is an integer number (452559642).

Almost surely, 2^1357678923 is an apocalyptic number.

1357678923 is a deficient number, since it is larger than the sum of its proper divisors (452559645).

1357678923 is an equidigital number, since it uses as much as digits as its factorization.

1357678923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452559644.

The product of its digits is 1905120, while the sum is 51.

The square root of 1357678923 is about 36846.6948721320. The cubic root of 1357678923 is about 1107.3009996302.

The spelling of 1357678923 in words is "one billion, three hundred fifty-seven million, six hundred seventy-eight thousand, nine hundred twenty-three".