189871163874 has 96 divisors (see below), whose sum is σ = 490036445184. Its totient is φ = 51989130720.

The previous prime is 189871163827. The next prime is 189871163887. The reversal of 189871163874 is 478361178981.

189871163874 is a `hidden beast` number, since 189 + 8 + 71 + 1 + 6 + 387 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166347 + ... + 638289.

It is an arithmetic number, because the mean of its divisors is an integer number (5104546304).

Almost surely, 2^189871163874 is an apocalyptic number.

189871163874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189871163874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245018222592).

189871163874 is an abundant number, since it is smaller than the sum of its proper divisors (300165281310).

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

189871163874 is a wasteful number, since it uses less digits than its factorization.

189871163874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472092 (or 472089 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 63.

The spelling of 189871163874 in words is "one hundred eighty-nine billion, eight hundred seventy-one million, one hundred sixty-three thousand, eight hundred seventy-four".