190478131 has 4 divisors (see below), whose sum is σ = 194072112. Its totient is φ = 186884152.

The previous prime is 190478053. The next prime is 190478143. The reversal of 190478131 is 131874091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190478131 is a prime.

It is a super-2 number, since 2×190478131² = 72563836778506322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190478191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796911 + ... + 1797016.

It is an arithmetic number, because the mean of its divisors is an integer number (48518028).

Almost surely, 2^190478131 is an apocalyptic number.

190478131 is a deficient number, since it is larger than the sum of its proper divisors (3593981).

190478131 is an equidigital number, since it uses as much as digits as its factorization.

190478131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593980.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 190478131 is about 13801.3814888221. The cubic root of 190478131 is about 575.3715365653.

The spelling of 190478131 in words is "one hundred ninety million, four hundred seventy-eight thousand, one hundred thirty-one".