191039532 has 12 divisors (see below), whose sum is σ = 445758936. Its totient is φ = 63679840.

The previous prime is 191039521. The next prime is 191039533. The reversal of 191039532 is 235930191.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×191039532² = 72992205573558048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191039493 and 191039502.

It is not an unprimeable number, because it can be changed into a prime (191039533) 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 3 ways as a sum of consecutive naturals, for example, 7959969 + ... + 7959992.

It is an arithmetic number, because the mean of its divisors is an integer number (37146578).

Almost surely, 2^191039532 is an apocalyptic number.

191039532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191039532 is an abundant number, since it is smaller than the sum of its proper divisors (254719404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191039532 is a wasteful number, since it uses less digits than its factorization.

191039532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15919968 (or 15919966 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 191039532 is about 13821.7051046533. The cubic root of 191039532 is about 575.9362511432.

The spelling of 191039532 in words is "one hundred ninety-one million, thirty-nine thousand, five hundred thirty-two".