1372916557 has 4 divisors (see below), whose sum is σ = 1373058076. Its totient is φ = 1372775040.

The previous prime is 1372916543. The next prime is 1372916591. The reversal of 1372916557 is 7556192731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7556192731 = 9547 ⋅791473.

It can be written as a sum of positive squares in 2 ways, for example, as 423906921 + 949009636 = 20589^2 + 30806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372916557 - 2¹⁵ = 1372883789 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 (1372916357) 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, 55044 + ... + 75997.

It is an arithmetic number, because the mean of its divisors is an integer number (343264519).

Almost surely, 2^1372916557 is an apocalyptic number.

It is an amenable number.

1372916557 is a deficient number, since it is larger than the sum of its proper divisors (141519).

1372916557 is a wasteful number, since it uses less digits than its factorization.

1372916557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141518.

The product of its digits is 396900, while the sum is 46.

The square root of 1372916557 is about 37052.8886458263. Note that the first 3 decimals coincide. The cubic root of 1372916557 is about 1111.4281206766.

The spelling of 1372916557 in words is "one billion, three hundred seventy-two million, nine hundred sixteen thousand, five hundred fifty-seven".