18498679 has 2 divisors, whose sum is σ = 18498680. Its totient is φ = 18498678.

The previous prime is 18498671. The next prime is 18498713. The reversal of 18498679 is 97689481.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97689481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18498679 - 2³ = 18498671 is a prime.

It is a super-2 number, since 2×18498679² = 684402249490082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18498671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9249339 + 9249340.

It is an arithmetic number, because the mean of its divisors is an integer number (9249340).

Almost surely, 2^18498679 is an apocalyptic number.

18498679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18498679 is an equidigital number, since it uses as much as digits as its factorization.

18498679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 18498679 is about 4301.0090676491. The cubic root of 18498679 is about 264.4723284171.

The spelling of 18498679 in words is "eighteen million, four hundred ninety-eight thousand, six hundred seventy-nine".