190107997 has 4 divisors (see below), whose sum is σ = 194152896. Its totient is φ = 186063100.

The previous prime is 190107989. The next prime is 190108013. The reversal of 190107997 is 799701091.

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.

It is a cyclic number.

It is not a de Polignac number, because 190107997 - 2³ = 190107989 is a prime.

It is a super-2 number, since 2×190107997² = 72282101046704018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190107917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022379 + ... + 2022472.

It is an arithmetic number, because the mean of its divisors is an integer number (48538224).

Almost surely, 2^190107997 is an apocalyptic number.

It is an amenable number.

190107997 is a deficient number, since it is larger than the sum of its proper divisors (4044899).

190107997 is an equidigital number, since it uses as much as digits as its factorization.

190107997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044898.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 190107997 is about 13787.9656585009. The cubic root of 190107997 is about 574.9986107087.

The spelling of 190107997 in words is "one hundred ninety million, one hundred seven thousand, nine hundred ninety-seven".