189146431 has 8 divisors (see below), whose sum is σ = 192037104. Its totient is φ = 186264000.

The previous prime is 189146429. The next prime is 189146467. The reversal of 189146431 is 134641981.

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

It is a cyclic number.

It is not a de Polignac number, because 189146431 - 2¹ = 189146429 is a prime.

It is a super-2 number, since 2×189146431² = 71552744720075522, 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 (189146401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56556 + ... + 59806.

It is an arithmetic number, because the mean of its divisors is an integer number (24004638).

Almost surely, 2^189146431 is an apocalyptic number.

189146431 is a deficient number, since it is larger than the sum of its proper divisors (2890673).

189146431 is an equidigital number, since it uses as much as digits as its factorization.

189146431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121.

The product of its digits is 20736, while the sum is 37.

The square root of 189146431 is about 13753.0516977142. The cubic root of 189146431 is about 574.0275242055.

The spelling of 189146431 in words is "one hundred eighty-nine million, one hundred forty-six thousand, four hundred thirty-one".