1497372139 has 2 divisors, whose sum is σ = 1497372140. Its totient is φ = 1497372138.

The previous prime is 1497372133. The next prime is 1497372161. The reversal of 1497372139 is 9312737941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1497372139 - 2¹³ = 1497363947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1497372133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748686069 + 748686070.

It is an arithmetic number, because the mean of its divisors is an integer number (748686070).

Almost surely, 2^1497372139 is an apocalyptic number.

1497372139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1497372139 is an equidigital number, since it uses as much as digits as its factorization.

1497372139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 1497372139 is about 38695.8930508135. The cubic root of 1497372139 is about 1144.0453740439.

The spelling of 1497372139 in words is "one billion, four hundred ninety-seven million, three hundred seventy-two thousand, one hundred thirty-nine".