190921384850 has 48 divisors (see below), whose sum is σ = 418936091136. Its totient is φ = 63347184000.

The previous prime is 190921384847. The next prime is 190921384853. The reversal of 190921384850 is 58483129091.

190921384850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (190921384847) and next prime (190921384853).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (190921384853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8787371 + ... + 8809070.

It is an arithmetic number, because the mean of its divisors is an integer number (8727835232).

Almost surely, 2^190921384850 is an apocalyptic number.

190921384850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190921384850 is an abundant number, since it is smaller than the sum of its proper divisors (228014706286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190921384850 is a wasteful number, since it uses less digits than its factorization.

190921384850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17596491 (or 17596486 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 190921384850 in words is "one hundred ninety billion, nine hundred twenty-one million, three hundred eighty-four thousand, eight hundred fifty".