18070979 has 2 divisors, whose sum is σ = 18070980. Its totient is φ = 18070978.

The previous prime is 18070967. The next prime is 18070981. The reversal of 18070979 is 97907081.

It is a strong prime.

It is an emirp because it is prime and its reverse (97907081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18070979 - 2⁴ = 18070963 is a prime.

Together with 18070981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18070999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035489 + 9035490.

It is an arithmetic number, because the mean of its divisors is an integer number (9035490).

Almost surely, 2^18070979 is an apocalyptic number.

18070979 is a deficient number, since it is larger than the sum of its proper divisors (1).

18070979 is an equidigital number, since it uses as much as digits as its factorization.

18070979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 18070979 is about 4250.9974123728. The cubic root of 18070979 is about 262.4181646640.

The spelling of 18070979 in words is "eighteen million, seventy thousand, nine hundred seventy-nine".