190887117804 has 120 divisors (see below), whose sum is σ = 515948017200. Its totient is φ = 61493261184.

The previous prime is 190887117787. The next prime is 190887117821. The reversal of 190887117804 is 408711788091.

It is an interprime number because it is at equal distance from previous prime (190887117787) and next prime (190887117821).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1732779 + ... + 1839645.

It is an arithmetic number, because the mean of its divisors is an integer number (4299566810).

Almost surely, 2^190887117804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190887117804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257974008600).

190887117804 is an abundant number, since it is smaller than the sum of its proper divisors (325060899396).

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

190887117804 is a wasteful number, since it uses less digits than its factorization.

190887117804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107069 (or 107058 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 54.

The spelling of 190887117804 in words is "one hundred ninety billion, eight hundred eighty-seven million, one hundred seventeen thousand, eight hundred four".