190981297 has 8 divisors (see below), whose sum is σ = 212307200. Its totient is φ = 170603280.

The previous prime is 190981291. The next prime is 190981319. The reversal of 190981297 is 792189091.

It is a happy number.

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 190981297 - 2¹¹ = 190979249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190981291) 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, 236547 + ... + 237352.

It is an arithmetic number, because the mean of its divisors is an integer number (26538400).

Almost surely, 2^190981297 is an apocalyptic number.

It is an amenable number.

190981297 is a deficient number, since it is larger than the sum of its proper divisors (21325903).

190981297 is a wasteful number, since it uses less digits than its factorization.

190981297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473943.

The product of its (nonzero) digits is 81648, while the sum is 46.

The square root of 190981297 is about 13819.5982937276. The cubic root of 190981297 is about 575.8777238918.

The spelling of 190981297 in words is "one hundred ninety million, nine hundred eighty-one thousand, two hundred ninety-seven".