18700943033 has 2 divisors, whose sum is σ = 18700943034. Its totient is φ = 18700943032.

The previous prime is 18700943011. The next prime is 18700943071. The reversal of 18700943033 is 33034900781.

It is an a-pointer prime, because the next prime (18700943071) can be obtained adding 18700943033 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16669908544 + 2031034489 = 129112^2 + 45067^2 .

It is a cyclic number.

It is not a de Polignac number, because 18700943033 - 2⁶ = 18700942969 is a prime.

It is a super-2 number, since 2×18700943033² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18700943003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9350471516 + 9350471517.

It is an arithmetic number, because the mean of its divisors is an integer number (9350471517).

Almost surely, 2^18700943033 is an apocalyptic number.

It is an amenable number.

18700943033 is a deficient number, since it is larger than the sum of its proper divisors (1).

18700943033 is an equidigital number, since it uses as much as digits as its factorization.

18700943033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 18700943033 in words is "eighteen billion, seven hundred million, nine hundred forty-three thousand, thirty-three".