189383493 has 8 divisors (see below), whose sum is σ = 271935328. Its totient is φ = 116543664.

The previous prime is 189383489. The next prime is 189383521. The reversal of 189383493 is 394383981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189383493 - 2² = 189383489 is a prime.

It is a super-2 number, since 2×189383493² = 71732214841762098, 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 (189383413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2427955 + ... + 2428032.

It is an arithmetic number, because the mean of its divisors is an integer number (33991916).

Almost surely, 2^189383493 is an apocalyptic number.

189383493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189383493 is a deficient number, since it is larger than the sum of its proper divisors (82551835).

189383493 is a wasteful number, since it uses less digits than its factorization.

189383493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856003.

The product of its digits is 559872, while the sum is 48.

The square root of 189383493 is about 13761.6675225061. The cubic root of 189383493 is about 574.2672384856.

The spelling of 189383493 in words is "one hundred eighty-nine million, three hundred eighty-three thousand, four hundred ninety-three".