18229235475 has 24 divisors (see below), whose sum is σ = 32878913472. Its totient is φ = 8838416800.

The previous prime is 18229235471. The next prime is 18229235501. The reversal of 18229235475 is 57453292281.

It is not a de Polignac number, because 18229235475 - 2² = 18229235471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18229235471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11047197 + ... + 11048846.

It is an arithmetic number, because the mean of its divisors is an integer number (1369954728).

Almost surely, 2^18229235475 is an apocalyptic number.

18229235475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18229235475 is a deficient number, since it is larger than the sum of its proper divisors (14649677997).

18229235475 is a wasteful number, since it uses less digits than its factorization.

18229235475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22096067 (or 22096062 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The spelling of 18229235475 in words is "eighteen billion, two hundred twenty-nine million, two hundred thirty-five thousand, four hundred seventy-five".