18484736969 has 2 divisors, whose sum is σ = 18484736970. Its totient is φ = 18484736968.

The previous prime is 18484736951. The next prime is 18484736971. The reversal of 18484736969 is 96963748481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10485760000 + 7998976969 = 102400^2 + 89437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18484736969 is a prime.

It is a super-2 number, since 2×18484736969² (a number of 21 digits) contains 22 as substring.

Together with 18484736971, 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 (18484736989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242368484 + 9242368485.

It is an arithmetic number, because the mean of its divisors is an integer number (9242368485).

Almost surely, 2^18484736969 is an apocalyptic number.

It is an amenable number.

18484736969 is a deficient number, since it is larger than the sum of its proper divisors (1).

18484736969 is an equidigital number, since it uses as much as digits as its factorization.

18484736969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62705664, while the sum is 65.

The spelling of 18484736969 in words is "eighteen billion, four hundred eighty-four million, seven hundred thirty-six thousand, nine hundred sixty-nine".