20412913 has 2 divisors, whose sum is σ = 20412914. Its totient is φ = 20412912.

The previous prime is 20412893. The next prime is 20412923. The reversal of 20412913 is 31921402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16136289 + 4276624 = 4017^2 + 2068^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412913 - 2⁵ = 20412881 is a prime.

It is not a weakly prime, because it can be changed into another prime (20412923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206456 + 10206457.

It is an arithmetic number, because the mean of its divisors is an integer number (10206457).

Almost surely, 2^20412913 is an apocalyptic number.

It is an amenable number.

20412913 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412913 is an equidigital number, since it uses as much as digits as its factorization.

20412913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20412913 is about 4518.0651832394. The cubic root of 20412913 is about 273.2970820784.

The spelling of 20412913 in words is "twenty million, four hundred twelve thousand, nine hundred thirteen".