159394513 has 2 divisors, whose sum is σ = 159394514. Its totient is φ = 159394512.

The previous prime is 159394451. The next prime is 159394517. The reversal of 159394513 is 315493951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156325009 + 3069504 = 12503^2 + 1752^2 .

It is a cyclic number.

It is not a de Polignac number, because 159394513 - 2¹³ = 159386321 is a prime.

It is a super-2 number, since 2×159394513² = 50813221549014338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159394517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79697256 + 79697257.

It is an arithmetic number, because the mean of its divisors is an integer number (79697257).

Almost surely, 2^159394513 is an apocalyptic number.

It is an amenable number.

159394513 is a deficient number, since it is larger than the sum of its proper divisors (1).

159394513 is an equidigital number, since it uses as much as digits as its factorization.

159394513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 40.

The square root of 159394513 is about 12625.1539792590. The cubic root of 159394513 is about 542.1978474158.

The spelling of 159394513 in words is "one hundred fifty-nine million, three hundred ninety-four thousand, five hundred thirteen".