191349642 has 24 divisors (see below), whose sum is σ = 420654528. Its totient is φ = 57984520.

The previous prime is 191349547. The next prime is 191349659. The reversal of 191349642 is 246943191.

It is a super-2 number, since 2×191349642² = 73229370987056328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 191349642.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131058 + ... + 132509.

It is an arithmetic number, because the mean of its divisors is an integer number (17527272).

Almost surely, 2^191349642 is an apocalyptic number.

191349642 is an abundant number, since it is smaller than the sum of its proper divisors (229304886).

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

191349642 is a wasteful number, since it uses less digits than its factorization.

191349642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263594 (or 263583 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 191349642 is about 13832.9187809370. The cubic root of 191349642 is about 576.2477172832.

The spelling of 191349642 in words is "one hundred ninety-one million, three hundred forty-nine thousand, six hundred forty-two".