1392890613 has 4 divisors (see below), whose sum is σ = 1857187488. Its totient is φ = 928593740.

The previous prime is 1392890593. The next prime is 1392890623. The reversal of 1392890613 is 3160982931.

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 a cyclic number.

It is not a de Polignac number, because 1392890613 - 2⁹ = 1392890101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392890623) 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, 232148433 + ... + 232148438.

It is an arithmetic number, because the mean of its divisors is an integer number (464296872).

Almost surely, 2^1392890613 is an apocalyptic number.

It is an amenable number.

1392890613 is a deficient number, since it is larger than the sum of its proper divisors (464296875).

1392890613 is an equidigital number, since it uses as much as digits as its factorization.

1392890613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464296874.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 1392890613 is about 37321.4497708757. The cubic root of 1392890613 is about 1116.7921103697.

The spelling of 1392890613 in words is "one billion, three hundred ninety-two million, eight hundred ninety thousand, six hundred thirteen".