1618258013 has 2 divisors, whose sum is σ = 1618258014. Its totient is φ = 1618258012.

The previous prime is 1618257961. The next prime is 1618258039. The reversal of 1618258013 is 3108528161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988599364 + 629658649 = 31442^2 + 25093^2 .

It is an emirp because it is prime and its reverse (3108528161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1618258013 - 2⁸ = 1618257757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618258073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809129006 + 809129007.

It is an arithmetic number, because the mean of its divisors is an integer number (809129007).

Almost surely, 2^1618258013 is an apocalyptic number.

It is an amenable number.

1618258013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618258013 is an equidigital number, since it uses as much as digits as its factorization.

1618258013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1618258013 is about 40227.5777669996. The cubic root of 1618258013 is about 1174.0391754130.

The spelling of 1618258013 in words is "one billion, six hundred eighteen million, two hundred fifty-eight thousand, thirteen".