190365997 has 4 divisors (see below), whose sum is σ = 200385280. Its totient is φ = 180346716.

The previous prime is 190365977. The next prime is 190366003. The reversal of 190365997 is 799563091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799563091 = 17 ⋅47033123.

It is a cyclic number.

It is not a de Polignac number, because 190365997 - 2⁷ = 190365869 is a prime.

It is a super-3 number, since 3×190365997³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190365997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190365977) 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 in 3 ways as a sum of consecutive naturals, for example, 5009613 + ... + 5009650.

It is an arithmetic number, because the mean of its divisors is an integer number (50096320).

Almost surely, 2^190365997 is an apocalyptic number.

It is an amenable number.

190365997 is a deficient number, since it is larger than the sum of its proper divisors (10019283).

190365997 is a wasteful number, since it uses less digits than its factorization.

190365997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019282.

The product of its (nonzero) digits is 459270, while the sum is 49.

The square root of 190365997 is about 13797.3184713552. The cubic root of 190365997 is about 575.2586078066.

The spelling of 190365997 in words is "one hundred ninety million, three hundred sixty-five thousand, nine hundred ninety-seven".