190797049 has 8 divisors (see below), whose sum is σ = 196776008. Its totient is φ = 184861440.

The previous prime is 190797041. The next prime is 190797059. The reversal of 190797049 is 940797091.

It can be written as a sum of positive squares in 4 ways, for example, as 148962025 + 41835024 = 12205^2 + 6468^2 .

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 190797049 - 2³ = 190797041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190797041) 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, 1782 + ... + 19615.

It is an arithmetic number, because the mean of its divisors is an integer number (24597001).

Almost surely, 2^190797049 is an apocalyptic number.

It is an amenable number.

190797049 is a deficient number, since it is larger than the sum of its proper divisors (5978959).

190797049 is a wasteful number, since it uses less digits than its factorization.

190797049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21675.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 190797049 is about 13812.9305000785. The cubic root of 190797049 is about 575.6924728401.

The spelling of 190797049 in words is "one hundred ninety million, seven hundred ninety-seven thousand, forty-nine".