190134561 has 4 divisors (see below), whose sum is σ = 253512752. Its totient is φ = 126756372.

The previous prime is 190134557. The next prime is 190134587. The reversal of 190134561 is 165431091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 190134561 - 2² = 190134557 is a prime.

It is a super-4 number, since 4×190134561⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190134541) 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 3 ways as a sum of consecutive naturals, for example, 31689091 + ... + 31689096.

It is an arithmetic number, because the mean of its divisors is an integer number (63378188).

Almost surely, 2^190134561 is an apocalyptic number.

It is an amenable number.

190134561 is a deficient number, since it is larger than the sum of its proper divisors (63378191).

190134561 is an equidigital number, since it uses as much as digits as its factorization.

190134561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63378190.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 190134561 is about 13788.9289286732. The cubic root of 190134561 is about 575.0253911913.

The spelling of 190134561 in words is "one hundred ninety million, one hundred thirty-four thousand, five hundred sixty-one".