1372197829 has 2 divisors, whose sum is σ = 1372197830. Its totient is φ = 1372197828.

The previous prime is 1372197821. The next prime is 1372197833. The reversal of 1372197829 is 9287912731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1354092804 + 18105025 = 36798^2 + 4255^2 .

It is an emirp because it is prime and its reverse (9287912731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1372197829 - 2³ = 1372197821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1372197821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686098914 + 686098915.

It is an arithmetic number, because the mean of its divisors is an integer number (686098915).

Almost surely, 2^1372197829 is an apocalyptic number.

It is an amenable number.

1372197829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372197829 is an equidigital number, since it uses as much as digits as its factorization.

1372197829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 49.

The square root of 1372197829 is about 37043.1886991387. The cubic root of 1372197829 is about 1111.2341409475.

The spelling of 1372197829 in words is "one billion, three hundred seventy-two million, one hundred ninety-seven thousand, eight hundred twenty-nine".