189844967 has 30 divisors (see below), whose sum is σ = 227973288. Its totient is φ = 157762176.

The previous prime is 189844943. The next prime is 189844981. The reversal of 189844967 is 769448981.

It is not a de Polignac number, because 189844967 - 2¹⁸ = 189582823 is a prime.

It is a super-2 number, since 2×189844967² = 72082222990462178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189844937) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 8254118 + ... + 8254140.

Almost surely, 2^189844967 is an apocalyptic number.

189844967 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

189844967 is a deficient number, since it is larger than the sum of its proper divisors (38128321).

189844967 is an frugal number, since it uses more digits than its factorization.

189844967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 53 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 56.

The square root of 189844967 is about 13778.4239664774. The cubic root of 189844967 is about 574.7333024059.

The spelling of 189844967 in words is "one hundred eighty-nine million, eight hundred forty-four thousand, nine hundred sixty-seven".