1372040491 has 4 divisors (see below), whose sum is σ = 1373425984. Its totient is φ = 1370655000.

The previous prime is 1372040477. The next prime is 1372040519. The reversal of 1372040491 is 1940402731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1372040491 - 2²⁵ = 1338486059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1372040291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691260 + ... + 693241.

It is an arithmetic number, because the mean of its divisors is an integer number (343356496).

Almost surely, 2^1372040491 is an apocalyptic number.

1372040491 is a deficient number, since it is larger than the sum of its proper divisors (1385493).

1372040491 is an equidigital number, since it uses as much as digits as its factorization.

1372040491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385492.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1372040491 is about 37041.0649279958. The cubic root of 1372040491 is about 1111.1916674702.

The spelling of 1372040491 in words is "one billion, three hundred seventy-two million, forty thousand, four hundred ninety-one".