971874189 has 24 divisors (see below), whose sum is σ = 1649243232. Its totient is φ = 543705120.

The previous prime is 971874161. The next prime is 971874247. The reversal of 971874189 is 981478179.

It is not a de Polignac number, because 971874189 - 2⁸ = 971873933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971874119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376287 + ... + 378860.

It is an arithmetic number, because the mean of its divisors is an integer number (68718468).

Almost surely, 2^971874189 is an apocalyptic number.

971874189 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

971874189 is a deficient number, since it is larger than the sum of its proper divisors (677369043).

971874189 is a wasteful number, since it uses less digits than its factorization.

971874189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755177 (or 755174 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 971874189 is about 31174.8967760921. The cubic root of 971874189 is about 990.5354342678.

The spelling of 971874189 in words is "nine hundred seventy-one million, eight hundred seventy-four thousand, one hundred eighty-nine".