18373029413 has 2 divisors, whose sum is σ = 18373029414. Its totient is φ = 18373029412.

The previous prime is 18373029407. The next prime is 18373029509. The reversal of 18373029413 is 31492037381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10849722244 + 7523307169 = 104162^2 + 86737^2 .

It is a cyclic number.

It is not a de Polignac number, because 18373029413 - 2²² = 18368835109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18373029613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9186514706 + 9186514707.

It is an arithmetic number, because the mean of its divisors is an integer number (9186514707).

Almost surely, 2^18373029413 is an apocalyptic number.

It is an amenable number.

18373029413 is a deficient number, since it is larger than the sum of its proper divisors (1).

18373029413 is an equidigital number, since it uses as much as digits as its factorization.

18373029413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 18373029413 in words is "eighteen billion, three hundred seventy-three million, twenty-nine thousand, four hundred thirteen".