18747969259 has 2 divisors, whose sum is σ = 18747969260. Its totient is φ = 18747969258.

The previous prime is 18747969217. The next prime is 18747969337. The reversal of 18747969259 is 95296974781.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18747969259 - 2¹¹ = 18747967211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18747969194 and 18747969203.

It is not a weakly prime, because it can be changed into another prime (18747969209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9373984629 + 9373984630.

It is an arithmetic number, because the mean of its divisors is an integer number (9373984630).

Almost surely, 2^18747969259 is an apocalyptic number.

18747969259 is a deficient number, since it is larger than the sum of its proper divisors (1).

18747969259 is an equidigital number, since it uses as much as digits as its factorization.

18747969259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 67.

The spelling of 18747969259 in words is "eighteen billion, seven hundred forty-seven million, nine hundred sixty-nine thousand, two hundred fifty-nine".