190779491 has 12 divisors (see below), whose sum is σ = 234982728. Its totient is φ = 153905472.

The previous prime is 190779469. The next prime is 190779497. The reversal of 190779491 is 194977091.

190779491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190779491 - 2¹⁸ = 190517347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190779497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113681 + ... + 115346.

It is an arithmetic number, because the mean of its divisors is an integer number (19581894).

Almost surely, 2^190779491 is an apocalyptic number.

190779491 is a deficient number, since it is larger than the sum of its proper divisors (44203237).

190779491 is a wasteful number, since it uses less digits than its factorization.

190779491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229058 (or 229051 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 190779491 is about 13812.2949215545. The cubic root of 190779491 is about 575.6748130308.

The spelling of 190779491 in words is "one hundred ninety million, seven hundred seventy-nine thousand, four hundred ninety-one".