190163431 has 4 divisors (see below), whose sum is σ = 193386600. Its totient is φ = 186940264.

The previous prime is 190163357. The next prime is 190163497. The reversal of 190163431 is 134361091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134361091 = 599 ⋅224309.

It is a cyclic number.

It is not a de Polignac number, because 190163431 - 2²¹ = 188066279 is a prime.

It is a super-2 number, since 2×190163431² = 72324260979383522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190163431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190163131) 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, 1611496 + ... + 1611613.

It is an arithmetic number, because the mean of its divisors is an integer number (48346650).

Almost surely, 2^190163431 is an apocalyptic number.

190163431 is a deficient number, since it is larger than the sum of its proper divisors (3223169).

190163431 is an equidigital number, since it uses as much as digits as its factorization.

190163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223168.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 190163431 is about 13789.9757432709. The cubic root of 190163431 is about 575.0544936382.

The spelling of 190163431 in words is "one hundred ninety million, one hundred sixty-three thousand, four hundred thirty-one".