191496381 has 16 divisors (see below), whose sum is σ = 270864000. Its totient is φ = 119925248.

The previous prime is 191496373. The next prime is 191496391. The reversal of 191496381 is 183694191.

It is a cyclic number.

It is not a de Polignac number, because 191496381 - 2³ = 191496373 is a prime.

It is a super-2 number, since 2×191496381² = 73341727872194322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191496311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25720 + ... + 32318.

It is an arithmetic number, because the mean of its divisors is an integer number (16929000).

Almost surely, 2^191496381 is an apocalyptic number.

It is an amenable number.

191496381 is a deficient number, since it is larger than the sum of its proper divisors (79367619).

191496381 is a wasteful number, since it uses less digits than its factorization.

191496381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188.

The product of its digits is 46656, while the sum is 42.

The square root of 191496381 is about 13838.2217426951. The cubic root of 191496381 is about 576.3949807034.

The spelling of 191496381 in words is "one hundred ninety-one million, four hundred ninety-six thousand, three hundred eighty-one".