190845797 has 2 divisors, whose sum is σ = 190845798. Its totient is φ = 190845796.

The previous prime is 190845773. The next prime is 190845817. The reversal of 190845797 is 797548091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125462401 + 65383396 = 11201^2 + 8086^2 .

It is an emirp because it is prime and its reverse (797548091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190845797 - 2²⁴ = 174068581 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190845737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95422898 + 95422899.

It is an arithmetic number, because the mean of its divisors is an integer number (95422899).

Almost surely, 2^190845797 is an apocalyptic number.

It is an amenable number.

190845797 is a deficient number, since it is larger than the sum of its proper divisors (1).

190845797 is an equidigital number, since it uses as much as digits as its factorization.

190845797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 190845797 is about 13814.6949658688. The cubic root of 190845797 is about 575.7414978243.

The spelling of 190845797 in words is "one hundred ninety million, eight hundred forty-five thousand, seven hundred ninety-seven".