188992828294890 has 64 divisors (see below), whose sum is σ = 455143960123776. Its totient is φ = 50224633878272.

The previous prime is 188992828294877. The next prime is 188992828294939. The reversal of 188992828294890 is 98492828299881.

It is a happy number.

It is a super-2 number, since 2×188992828294890² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188992828294797 and 188992828294806.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324262012 + ... + 324844328.

It is an arithmetic number, because the mean of its divisors is an integer number (7111624376934).

Almost surely, 2^{188992828294890} is an apocalyptic number.

188992828294890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188992828294890 is an abundant number, since it is smaller than the sum of its proper divisors (266151131828886).

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

188992828294890 is a wasteful number, since it uses less digits than its factorization.

188992828294890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619543.

The product of its (nonzero) digits is 6879707136, while the sum is 87.

The spelling of 188992828294890 in words is "one hundred eighty-eight trillion, nine hundred ninety-two billion, eight hundred twenty-eight million, two hundred ninety-four thousand, eight hundred ninety".