18442334193 has 16 divisors (see below), whose sum is σ = 24649452096. Its totient is φ = 12265081920.

The previous prime is 18442334177. The next prime is 18442334221. The reversal of 18442334193 is 39143324481.

It is a happy number.

It is not a de Polignac number, because 18442334193 - 2⁴ = 18442334177 is a prime.

It is a super-2 number, since 2×18442334193² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18442334143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5218255 + ... + 5221787.

It is an arithmetic number, because the mean of its divisors is an integer number (1540590756).

Almost surely, 2^18442334193 is an apocalyptic number.

It is an amenable number.

18442334193 is a deficient number, since it is larger than the sum of its proper divisors (6207117903).

18442334193 is a wasteful number, since it uses less digits than its factorization.

18442334193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264.

The product of its digits is 248832, while the sum is 42.

The spelling of 18442334193 in words is "eighteen billion, four hundred forty-two million, three hundred thirty-four thousand, one hundred ninety-three".