18346508926453 has 2 divisors, whose sum is σ = 18346508926454. Its totient is φ = 18346508926452.

The previous prime is 18346508926441. The next prime is 18346508926517. The reversal of 18346508926453 is 35462980564381.

It is a happy number.

It is an a-pointer prime, because the next prime (18346508926517) can be obtained adding 18346508926453 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16791981231204 + 1554527695249 = 4097802^2 + 1246807^2 .

It is a cyclic number.

It is not a de Polignac number, because 18346508926453 - 2²⁵ = 18346475372021 is a prime.

It is a super-2 number, since 2×18346508926453² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18346508926253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9173254463226 + 9173254463227.

It is an arithmetic number, because the mean of its divisors is an integer number (9173254463227).

Almost surely, 2^{18346508926453} is an apocalyptic number.

It is an amenable number.

18346508926453 is a deficient number, since it is larger than the sum of its proper divisors (1).

18346508926453 is an equidigital number, since it uses as much as digits as its factorization.

18346508926453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 149299200, while the sum is 64.

The spelling of 18346508926453 in words is "eighteen trillion, three hundred forty-six billion, five hundred eight million, nine hundred twenty-six thousand, four hundred fifty-three".