1513139 has 2 divisors, whose sum is σ = 1513140. Its totient is φ = 1513138.

The previous prime is 1513123. The next prime is 1513151. The reversal of 1513139 is 9313151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1513139 - 2⁴ = 1513123 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1513159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756569 + 756570.

It is an arithmetic number, because the mean of its divisors is an integer number (756570).

2^1513139 is an apocalyptic number.

1513139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513139 is an equidigital number, since it uses as much as digits as its factorization.

1513139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405, while the sum is 23.

The square root of 1513139 is about 1230.0971506349. The cubic root of 1513139 is about 114.8046842168.

The spelling of 1513139 in words is "one million, five hundred thirteen thousand, one hundred thirty-nine".