981478874189 has 8 divisors (see below), whose sum is σ = 1074125010432. Its totient is φ = 889402868640.

The previous prime is 981478874039. The next prime is 981478874197.

981478874189 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 981478874189 - 2⁸ = 981478873933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981478874989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142529069 + ... + 142535954.

It is an arithmetic number, because the mean of its divisors is an integer number (134265626304).

Almost surely, 2^981478874189 is an apocalyptic number.

It is an amenable number.

981478874189 is a deficient number, since it is larger than the sum of its proper divisors (92646136243).

981478874189 is a wasteful number, since it uses less digits than its factorization.

981478874189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285065347.

The product of its digits is 260112384, while the sum is 74.

The spelling of 981478874189 in words is "nine hundred eighty-one billion, four hundred seventy-eight million, eight hundred seventy-four thousand, one hundred eighty-nine".