239166201613 has 2 divisors, whose sum is σ = 239166201614. Its totient is φ = 239166201612.

The previous prime is 239166201563. The next prime is 239166201619. The reversal of 239166201613 is 316102661932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225148352004 + 14017849609 = 474498^2 + 118397^2 .

It is a cyclic number.

It is not a de Polignac number, because 239166201613 - 2¹⁷ = 239166070541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239166201619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119583100806 + 119583100807.

It is an arithmetic number, because the mean of its divisors is an integer number (119583100807).

Almost surely, 2^239166201613 is an apocalyptic number.

It is an amenable number.

239166201613 is a deficient number, since it is larger than the sum of its proper divisors (1).

239166201613 is an equidigital number, since it uses as much as digits as its factorization.

239166201613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 239166201613 in words is "two hundred thirty-nine billion, one hundred sixty-six million, two hundred one thousand, six hundred thirteen".