190745961685 has 8 divisors (see below), whose sum is σ = 230081140440. Its totient is φ = 151806111744.

The previous prime is 190745961683. The next prime is 190745961691. The reversal of 190745961685 is 586169547091.

It can be written as a sum of positive squares in 4 ways, for example, as 6250799844 + 184495161841 = 79062^2 + 429529^2 .

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 190745961685 - 2¹ = 190745961683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190745961683) 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, 98831140 + ... + 98833069.

It is an arithmetic number, because the mean of its divisors is an integer number (28760142555).

Almost surely, 2^190745961685 is an apocalyptic number.

It is an amenable number.

190745961685 is a deficient number, since it is larger than the sum of its proper divisors (39335178755).

190745961685 is a wasteful number, since it uses less digits than its factorization.

190745961685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197664407.

The product of its (nonzero) digits is 16329600, while the sum is 61.

The spelling of 190745961685 in words is "one hundred ninety billion, seven hundred forty-five million, nine hundred sixty-one thousand, six hundred eighty-five".