18276397769 has 8 divisors (see below), whose sum is σ = 21331723008. Its totient is φ = 15332175360.

The previous prime is 18276397751. The next prime is 18276397771. The reversal of 18276397769 is 96779367281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18276397769 - 2¹⁶ = 18276332233 is a prime.

It is a super-2 number, since 2×18276397769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18276397709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27775352 + ... + 27776009.

It is an arithmetic number, because the mean of its divisors is an integer number (2666465376).

Almost surely, 2^18276397769 is an apocalyptic number.

It is an amenable number.

18276397769 is a deficient number, since it is larger than the sum of its proper divisors (3055325239).

18276397769 is an equidigital number, since it uses as much as digits as its factorization.

18276397769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55551415.

The product of its digits is 48009024, while the sum is 65.

The spelling of 18276397769 in words is "eighteen billion, two hundred seventy-six million, three hundred ninety-seven thousand, seven hundred sixty-nine".