191438932 has 6 divisors (see below), whose sum is σ = 335018138. Its totient is φ = 95719464.

The previous prime is 191438917. The next prime is 191438939. The reversal of 191438932 is 239834191.

It can be written as a sum of positive squares in only one way, i.e., 160123716 + 31315216 = 12654^2 + 5596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191438939) 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 as a sum of consecutive naturals, namely, 23929863 + ... + 23929870.

Almost surely, 2^191438932 is an apocalyptic number.

It is an amenable number.

191438932 is a deficient number, since it is larger than the sum of its proper divisors (143579206).

191438932 is a wasteful number, since it uses less digits than its factorization.

191438932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47859737 (or 47859735 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 191438932 is about 13836.1458506334. The cubic root of 191438932 is about 576.3373353544.

The spelling of 191438932 in words is "one hundred ninety-one million, four hundred thirty-eight thousand, nine hundred thirty-two".