190945897 has 8 divisors (see below), whose sum is σ = 197148672. Its totient is φ = 184816800.

The previous prime is 190945841. The next prime is 190945907. The reversal of 190945897 is 798549091.

190945897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190945897 - 2²³ = 182557289 is a prime.

It is a super-2 number, since 2×190945897² = 72920671162269218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190945837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13129 + ... + 23542.

It is an arithmetic number, because the mean of its divisors is an integer number (24643584).

Almost surely, 2^190945897 is an apocalyptic number.

It is an amenable number.

190945897 is a deficient number, since it is larger than the sum of its proper divisors (6202775).

190945897 is a wasteful number, since it uses less digits than its factorization.

190945897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36839.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 190945897 is about 13818.3174446095. The cubic root of 190945897 is about 575.8421404228.

The spelling of 190945897 in words is "one hundred ninety million, nine hundred forty-five thousand, eight hundred ninety-seven".