189827750994 has 32 divisors (see below), whose sum is σ = 452756874240. Its totient is φ = 51878391312.

The previous prime is 189827750939. The next prime is 189827751007. The reversal of 189827750994 is 499057728981.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98253564 + ... + 98255495.

It is an arithmetic number, because the mean of its divisors is an integer number (14148652320).

Almost surely, 2^189827750994 is an apocalyptic number.

189827750994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

189827750994 is an abundant number, since it is smaller than the sum of its proper divisors (262929123246).

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

189827750994 is a wasteful number, since it uses less digits than its factorization.

189827750994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196509094.

The product of its (nonzero) digits is 91445760, while the sum is 69.

The spelling of 189827750994 in words is "one hundred eighty-nine billion, eight hundred twenty-seven million, seven hundred fifty thousand, nine hundred ninety-four".