189207823266 has 64 divisors (see below), whose sum is σ = 524212162560. Its totient is φ = 49144888080.

The previous prime is 189207823219. The next prime is 189207823283. The reversal of 189207823266 is 662328702981.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22748106 + ... + 22756421.

It is an arithmetic number, because the mean of its divisors is an integer number (8190815040).

Almost surely, 2^189207823266 is an apocalyptic number.

189207823266 is an abundant number, since it is smaller than the sum of its proper divisors (335004339294).

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

189207823266 is a wasteful number, since it uses less digits than its factorization.

189207823266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45504556 (or 45504550 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 189207823266 in words is "one hundred eighty-nine billion, two hundred seven million, eight hundred twenty-three thousand, two hundred sixty-six".