1889920086 has 8 divisors (see below), whose sum is σ = 3779840184. Its totient is φ = 629973360.

The previous prime is 1889920079. The next prime is 1889920093. The reversal of 1889920086 is 6800299881.

It is an interprime number because it is at equal distance from previous prime (1889920079) and next prime (1889920093).

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

1889920086 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157493335 + ... + 157493346.

It is an arithmetic number, because the mean of its divisors is an integer number (472480023).

Almost surely, 2^1889920086 is an apocalyptic number.

1889920086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1889920086 is a wasteful number, since it uses less digits than its factorization.

1889920086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314986686.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1889920086 is about 43473.2111305342. The cubic root of 1889920086 is about 1236.3681638560.

The spelling of 1889920086 in words is "one billion, eight hundred eighty-nine million, nine hundred twenty thousand, eighty-six".