189007431 has 16 divisors (see below), whose sum is σ = 255564000. Its totient is φ = 124236288.

The previous prime is 189007393. The next prime is 189007447. The reversal of 189007431 is 134700981.

It is not a de Polignac number, because 189007431 - 2²¹ = 186910279 is a prime.

It is a super-2 number, since 2×189007431² = 71447617946439522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189007392 and 189007401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189007331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121245 + ... + 122793.

It is an arithmetic number, because the mean of its divisors is an integer number (15972750).

Almost surely, 2^189007431 is an apocalyptic number.

189007431 is a deficient number, since it is larger than the sum of its proper divisors (66556569).

189007431 is a wasteful number, since it uses less digits than its factorization.

189007431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 189007431 is about 13747.9973450681. The cubic root of 189007431 is about 573.8868758927.

The spelling of 189007431 in words is "one hundred eighty-nine million, seven thousand, four hundred thirty-one".