18698619156053 has 2 divisors, whose sum is σ = 18698619156054. Its totient is φ = 18698619156052.

The previous prime is 18698619156001. The next prime is 18698619156149. The reversal of 18698619156053 is 35065191689681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17211529147684 + 1487090008369 = 4148678^2 + 1219463^2 .

It is a cyclic number.

It is not a de Polignac number, because 18698619156053 - 2¹⁶ = 18698619090517 is a prime.

It is a super-2 number, since 2×18698619156053² (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 (18698619156353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9349309578026 + 9349309578027.

It is an arithmetic number, because the mean of its divisors is an integer number (9349309578027).

Almost surely, 2^{18698619156053} is an apocalyptic number.

It is an amenable number.

18698619156053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18698619156053 is an equidigital number, since it uses as much as digits as its factorization.

18698619156053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83980800, while the sum is 68.

The spelling of 18698619156053 in words is "eighteen trillion, six hundred ninety-eight billion, six hundred nineteen million, one hundred fifty-six thousand, fifty-three".