190745761 has 8 divisors (see below), whose sum is σ = 194500800. Its totient is φ = 187008240.

The previous prime is 190745743. The next prime is 190745791. The reversal of 190745761 is 167547091.

190745761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190745761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190745741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18796 + ... + 27106.

It is an arithmetic number, because the mean of its divisors is an integer number (24312600).

Almost surely, 2^190745761 is an apocalyptic number.

190745761 is the 6177-th centered decagonal number.

It is an amenable number.

190745761 is a deficient number, since it is larger than the sum of its proper divisors (3755039).

190745761 is an equidigital number, since it uses as much as digits as its factorization.

190745761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8759.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 190745761 is about 13811.0738539767. The cubic root of 190745761 is about 575.6408844085.

The spelling of 190745761 in words is "one hundred ninety million, seven hundred forty-five thousand, seven hundred sixty-one".