201642613 has 2 divisors, whose sum is σ = 201642614. Its totient is φ = 201642612.

The previous prime is 201642601. The next prime is 201642629. The reversal of 201642613 is 316246102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158306724 + 43335889 = 12582^2 + 6583^2 .

It is a cyclic number.

It is not a de Polignac number, because 201642613 - 2¹³ = 201634421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201642013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100821306 + 100821307.

It is an arithmetic number, because the mean of its divisors is an integer number (100821307).

Almost surely, 2^201642613 is an apocalyptic number.

It is an amenable number.

201642613 is a deficient number, since it is larger than the sum of its proper divisors (1).

201642613 is an equidigital number, since it uses as much as digits as its factorization.

201642613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 201642613 is about 14200.0920067442. The cubic root of 201642613 is about 586.4001943165.

Adding to 201642613 its reverse (316246102), we get a palindrome (517888715).

The spelling of 201642613 in words is "two hundred one million, six hundred forty-two thousand, six hundred thirteen".