190747091 has 2 divisors, whose sum is σ = 190747092. Its totient is φ = 190747090.

The previous prime is 190747087. The next prime is 190747121.

190747091 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 190747091 - 2² = 190747087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190747391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95373545 + 95373546.

It is an arithmetic number, because the mean of its divisors is an integer number (95373546).

Almost surely, 2^190747091 is an apocalyptic number.

190747091 is a deficient number, since it is larger than the sum of its proper divisors (1).

190747091 is an equidigital number, since it uses as much as digits as its factorization.

190747091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 190747091 is about 13811.1220036607. The cubic root of 190747091 is about 575.6422223160.

The spelling of 190747091 in words is "one hundred ninety million, seven hundred forty-seven thousand, ninety-one".