1392927538 has 8 divisors (see below), whose sum is σ = 2212296732. Its totient is φ = 655495296.

The previous prime is 1392927517. The next prime is 1392927553. The reversal of 1392927538 is 8357292931.

It can be written as a sum of positive squares in 2 ways, for example, as 1365080809 + 27846729 = 36947^2 + 5277^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1392927538² = 3880494252237482888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1392927491 and 1392927500.

It is an unprimeable number.

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, 20484195 + ... + 20484262.

Almost surely, 2^1392927538 is an apocalyptic number.

1392927538 is a deficient number, since it is larger than the sum of its proper divisors (819369194).

1392927538 is a wasteful number, since it uses less digits than its factorization.

1392927538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40968476.

The product of its digits is 816480, while the sum is 49.

The square root of 1392927538 is about 37321.9444563115. The cubic root of 1392927538 is about 1116.8019788604.

The spelling of 1392927538 in words is "one billion, three hundred ninety-two million, nine hundred twenty-seven thousand, five hundred thirty-eight".