189722390739 has 16 divisors (see below), whose sum is σ = 290374364928. Its totient is φ = 107935202592.

The previous prime is 189722390713. The next prime is 189722390749. The reversal of 189722390739 is 937093227981.

189722390739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189722390739 - 2⁹ = 189722390227 is a prime.

It is a super-2 number, since 2×189722390739² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189722390749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19894792 + ... + 19904325.

It is an arithmetic number, because the mean of its divisors is an integer number (18148397808).

Almost surely, 2^189722390739 is an apocalyptic number.

189722390739 is a deficient number, since it is larger than the sum of its proper divisors (100651974189).

189722390739 is a wasteful number, since it uses less digits than its factorization.

189722390739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39799354.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 189722390739 in words is "one hundred eighty-nine billion, seven hundred twenty-two million, three hundred ninety thousand, seven hundred thirty-nine".