190730649 has 16 divisors (see below), whose sum is σ = 257774400. Its totient is φ = 125427456.

The previous prime is 190730641. The next prime is 190730669. The reversal of 190730649 is 946037091.

It is not a de Polignac number, because 190730649 - 2³ = 190730641 is a prime.

It is a super-2 number, since 2×190730649² = 72756360935922402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190730641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215562 + ... + 216444.

It is an arithmetic number, because the mean of its divisors is an integer number (16110900).

Almost surely, 2^190730649 is an apocalyptic number.

It is an amenable number.

190730649 is a deficient number, since it is larger than the sum of its proper divisors (67043751).

190730649 is an equidigital number, since it uses as much as digits as its factorization.

190730649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 190730649 is about 13810.5267459283. The cubic root of 190730649 is about 575.6256821226.

The spelling of 190730649 in words is "one hundred ninety million, seven hundred thirty thousand, six hundred forty-nine".