190918838 has 8 divisors (see below), whose sum is σ = 312412680. Its totient is φ = 86781280.

The previous prime is 190918831. The next prime is 190918913. The reversal of 190918838 is 838819091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 190918792 and 190918801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190918831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4339043 + ... + 4339086.

It is an arithmetic number, because the mean of its divisors is an integer number (39051585).

Almost surely, 2^190918838 is an apocalyptic number.

190918838 is a deficient number, since it is larger than the sum of its proper divisors (121493842).

190918838 is a wasteful number, since it uses less digits than its factorization.

190918838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8678142.

The product of its (nonzero) digits is 124416, while the sum is 47.

The square root of 190918838 is about 13817.3383109773. The cubic root of 190918838 is about 575.8149382174.

The spelling of 190918838 in words is "one hundred ninety million, nine hundred eighteen thousand, eight hundred thirty-eight".