1372823197 has 2 divisors, whose sum is σ = 1372823198. Its totient is φ = 1372823196.

The previous prime is 1372823183. The next prime is 1372823267. The reversal of 1372823197 is 7913282731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880249561 + 492573636 = 29669^2 + 22194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372823197 - 2²⁷ = 1238605469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372823107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686411598 + 686411599.

It is an arithmetic number, because the mean of its divisors is an integer number (686411599).

Almost surely, 2^1372823197 is an apocalyptic number.

It is an amenable number.

1372823197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372823197 is an equidigital number, since it uses as much as digits as its factorization.

1372823197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 1372823197 is about 37051.6288036032. The cubic root of 1372823197 is about 1111.4029272830.

The spelling of 1372823197 in words is "one billion, three hundred seventy-two million, eight hundred twenty-three thousand, one hundred ninety-seven".