190889902005 has 64 divisors (see below), whose sum is σ = 358054898688. Its totient is φ = 85808194560.

The previous prime is 190889902003. The next prime is 190889902037. The reversal of 190889902005 is 500209988091.

It is not a de Polignac number, because 190889902005 - 2¹ = 190889902003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190889902003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 319927 + ... + 695796.

It is an arithmetic number, because the mean of its divisors is an integer number (5594607792).

Almost surely, 2^190889902005 is an apocalyptic number.

190889902005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190889902005 is a deficient number, since it is larger than the sum of its proper divisors (167164996683).

190889902005 is a wasteful number, since it uses less digits than its factorization.

190889902005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015826.

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 190889902005 in words is "one hundred ninety billion, eight hundred eighty-nine million, nine hundred two thousand, five".