18746042469 has 32 divisors (see below), whose sum is σ = 31448186880. Its totient is φ = 9648849600.

The previous prime is 18746042467. The next prime is 18746042473. The reversal of 18746042469 is 96424064781.

It is a happy number.

It is not a de Polignac number, because 18746042469 - 2¹ = 18746042467 is a prime.

It is a super-2 number, since 2×18746042469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18746042467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347077 + ... + 397434.

It is an arithmetic number, because the mean of its divisors is an integer number (982755840).

Almost surely, 2^18746042469 is an apocalyptic number.

It is an amenable number.

18746042469 is a deficient number, since it is larger than the sum of its proper divisors (12702144411).

18746042469 is a wasteful number, since it uses less digits than its factorization.

18746042469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744641.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 18746042469 in words is "eighteen billion, seven hundred forty-six million, forty-two thousand, four hundred sixty-nine".