189458372623 has 4 divisors (see below), whose sum is σ = 204032093608. Its totient is φ = 174884651640.

The previous prime is 189458372557. The next prime is 189458372651. The reversal of 189458372623 is 326273854981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189458372623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189458372693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7286860473 + ... + 7286860498.

It is an arithmetic number, because the mean of its divisors is an integer number (51008023402).

Almost surely, 2^189458372623 is an apocalyptic number.

189458372623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

189458372623 is a deficient number, since it is larger than the sum of its proper divisors (14573720985).

189458372623 is a wasteful number, since it uses less digits than its factorization.

189458372623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14573720984.

The product of its digits is 17418240, while the sum is 58.

The spelling of 189458372623 in words is "one hundred eighty-nine billion, four hundred fifty-eight million, three hundred seventy-two thousand, six hundred twenty-three".