190661613 has 32 divisors (see below), whose sum is σ = 277364736. Its totient is φ = 116030208.

The previous prime is 190661609. The next prime is 190661633. The reversal of 190661613 is 316166091.

It is not a de Polignac number, because 190661613 - 2² = 190661609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190661633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497620 + ... + 498002.

It is an arithmetic number, because the mean of its divisors is an integer number (8667648).

Almost surely, 2^190661613 is an apocalyptic number.

It is an amenable number.

190661613 is a deficient number, since it is larger than the sum of its proper divisors (86703123).

190661613 is a wasteful number, since it uses less digits than its factorization.

190661613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 190661613 is about 13808.0271219316. The cubic root of 190661613 is about 575.5562234552.

The spelling of 190661613 in words is "one hundred ninety million, six hundred sixty-one thousand, six hundred thirteen".