18254835413 has 2 divisors, whose sum is σ = 18254835414. Its totient is φ = 18254835412.

The previous prime is 18254835353. The next prime is 18254835437. The reversal of 18254835413 is 31453845281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12899962084 + 5354873329 = 113578^2 + 73177^2 .

It is a cyclic number.

It is not a de Polignac number, because 18254835413 - 2²² = 18250641109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18254835913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9127417706 + 9127417707.

It is an arithmetic number, because the mean of its divisors is an integer number (9127417707).

Almost surely, 2^18254835413 is an apocalyptic number.

It is an amenable number.

18254835413 is a deficient number, since it is larger than the sum of its proper divisors (1).

18254835413 is an equidigital number, since it uses as much as digits as its factorization.

18254835413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 44.

The spelling of 18254835413 in words is "eighteen billion, two hundred fifty-four million, eight hundred thirty-five thousand, four hundred thirteen".