18234309522 has 32 divisors (see below), whose sum is σ = 42844253760. Its totient is φ = 5100505920.

The previous prime is 18234309451. The next prime is 18234309539. The reversal of 18234309522 is 22590343281.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10625197 + ... + 10626912.

It is an arithmetic number, because the mean of its divisors is an integer number (1338882930).

Almost surely, 2^18234309522 is an apocalyptic number.

18234309522 is an abundant number, since it is smaller than the sum of its proper divisors (24609944238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18234309522 is a wasteful number, since it uses less digits than its factorization.

18234309522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21252138.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 18234309522 in words is "eighteen billion, two hundred thirty-four million, three hundred nine thousand, five hundred twenty-two".