1372076857 has 2 divisors, whose sum is σ = 1372076858. Its totient is φ = 1372076856.

The previous prime is 1372076831. The next prime is 1372076869. The reversal of 1372076857 is 7586702731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084977721 + 287099136 = 32939^2 + 16944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372076857 - 2¹⁹ = 1371552569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372076807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686038428 + 686038429.

It is an arithmetic number, because the mean of its divisors is an integer number (686038429).

Almost surely, 2^1372076857 is an apocalyptic number.

It is an amenable number.

1372076857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372076857 is an equidigital number, since it uses as much as digits as its factorization.

1372076857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 1372076857 is about 37041.5558123576. Note that the first 3 decimals coincide. The cubic root of 1372076857 is about 1111.2014847799.

The spelling of 1372076857 in words is "one billion, three hundred seventy-two million, seventy-six thousand, eight hundred fifty-seven".