18487297007 has 2 divisors, whose sum is σ = 18487297008. Its totient is φ = 18487297006.

The previous prime is 18487296979. The next prime is 18487297057. The reversal of 18487297007 is 70079278481.

It is a weak prime.

It is an emirp because it is prime and its reverse (70079278481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18487297007 - 2²⁴ = 18470519791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18487297007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18487297057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9243648503 + 9243648504.

It is an arithmetic number, because the mean of its divisors is an integer number (9243648504).

Almost surely, 2^18487297007 is an apocalyptic number.

18487297007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18487297007 is an equidigital number, since it uses as much as digits as its factorization.

18487297007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1580544, while the sum is 53.

The spelling of 18487297007 in words is "eighteen billion, four hundred eighty-seven million, two hundred ninety-seven thousand, seven".