1392274157 has 16 divisors (see below), whose sum is σ = 1473196032. Its totient is φ = 1313186160.

The previous prime is 1392274129. The next prime is 1392274181. The reversal of 1392274157 is 7514722931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1392274157 - 2¹⁰ = 1392273133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392274657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501788 + ... + 504554.

It is an arithmetic number, because the mean of its divisors is an integer number (92074752).

Almost surely, 2^1392274157 is an apocalyptic number.

It is an amenable number.

1392274157 is a deficient number, since it is larger than the sum of its proper divisors (80921875).

1392274157 is a wasteful number, since it uses less digits than its factorization.

1392274157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088.

The product of its digits is 105840, while the sum is 41.

The square root of 1392274157 is about 37313.1901209210. The cubic root of 1392274157 is about 1116.6273319874.

The spelling of 1392274157 in words is "one billion, three hundred ninety-two million, two hundred seventy-four thousand, one hundred fifty-seven".