190661836 has 6 divisors (see below), whose sum is σ = 333658220. Its totient is φ = 95330916.

The previous prime is 190661831. The next prime is 190661837. The reversal of 190661836 is 638166091.

190661836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (190661831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23832726 + ... + 23832733.

Almost surely, 2^190661836 is an apocalyptic number.

It is an amenable number.

190661836 is a deficient number, since it is larger than the sum of its proper divisors (142996384).

190661836 is a wasteful number, since it uses less digits than its factorization.

190661836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47665463 (or 47665461 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 190661836 is about 13808.0351969424. The cubic root of 190661836 is about 575.5564478475.

It can be divided in two parts, 19066 and 1836, that added together give a palindrome (20902).

The spelling of 190661836 in words is "one hundred ninety million, six hundred sixty-one thousand, eight hundred thirty-six".