18029087971 has 2 divisors, whose sum is σ = 18029087972. Its totient is φ = 18029087970.

The previous prime is 18029087969. The next prime is 18029088023. The reversal of 18029087971 is 17978092081.

It is an a-pointer prime, because the next prime (18029088023) can be obtained adding 18029087971 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18029087971 - 2¹ = 18029087969 is a prime.

Together with 18029087969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18029081971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9014543985 + 9014543986.

It is an arithmetic number, because the mean of its divisors is an integer number (9014543986).

Almost surely, 2^18029087971 is an apocalyptic number.

18029087971 is a deficient number, since it is larger than the sum of its proper divisors (1).

18029087971 is an equidigital number, since it uses as much as digits as its factorization.

18029087971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 52.

The spelling of 18029087971 in words is "eighteen billion, twenty-nine million, eighty-seven thousand, nine hundred seventy-one".