189767433623 has 2 divisors, whose sum is σ = 189767433624. Its totient is φ = 189767433622.

The previous prime is 189767433607. The next prime is 189767433629. The reversal of 189767433623 is 326334767981.

It is a strong prime.

It is an emirp because it is prime and its reverse (326334767981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189767433623 - 2⁴ = 189767433607 is a prime.

It is a super-2 number, since 2×189767433623² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189767433629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94883716811 + 94883716812.

It is an arithmetic number, because the mean of its divisors is an integer number (94883716812).

Almost surely, 2^189767433623 is an apocalyptic number.

189767433623 is a deficient number, since it is larger than the sum of its proper divisors (1).

189767433623 is an equidigital number, since it uses as much as digits as its factorization.

189767433623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 59.

The spelling of 189767433623 in words is "one hundred eighty-nine billion, seven hundred sixty-seven million, four hundred thirty-three thousand, six hundred twenty-three".