190919473 has 2 divisors, whose sum is σ = 190919474. Its totient is φ = 190919472.

The previous prime is 190919459. The next prime is 190919539. The reversal of 190919473 is 374919091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125260864 + 65658609 = 11192^2 + 8103^2 .

It is an emirp because it is prime and its reverse (374919091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190919473 - 2²⁵ = 157365041 is a prime.

It is not a weakly prime, because it can be changed into another prime (190919413) 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 as a sum of consecutive naturals, namely, 95459736 + 95459737.

It is an arithmetic number, because the mean of its divisors is an integer number (95459737).

Almost surely, 2^190919473 is an apocalyptic number.

It is an amenable number.

190919473 is a deficient number, since it is larger than the sum of its proper divisors (1).

190919473 is an equidigital number, since it uses as much as digits as its factorization.

190919473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 190919473 is about 13817.3612893345. The cubic root of 190919473 is about 575.8155766075.

The spelling of 190919473 in words is "one hundred ninety million, nine hundred nineteen thousand, four hundred seventy-three".