1392107490 has 24 divisors (see below), whose sum is σ = 3619479708. Its totient is φ = 371228640.

The previous prime is 1392107489. The next prime is 1392107501. The reversal of 1392107490 is 947012931.

It can be written as a sum of positive squares in 2 ways, for example, as 1310512401 + 81595089 = 36201^2 + 9033^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7733841 + ... + 7734020.

Almost surely, 2^1392107490 is an apocalyptic number.

1392107490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1392107490 is an abundant number, since it is smaller than the sum of its proper divisors (2227372218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1392107490 is a wasteful number, since it uses less digits than its factorization.

1392107490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15467874 (or 15467871 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1392107490 is about 37310.9567017518. The cubic root of 1392107490 is about 1116.5827736286.

The spelling of 1392107490 in words is "one billion, three hundred ninety-two million, one hundred seven thousand, four hundred ninety".