981464189 has 4 divisors (see below), whose sum is σ = 985196256. Its totient is φ = 977732124.

The previous prime is 981464131. The next prime is 981464201.

981464189 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 981464189 - 2⁸ = 981463933 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 (981464129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865639 + ... + 1866164.

It is an arithmetic number, because the mean of its divisors is an integer number (246299064).

Almost surely, 2^981464189 is an apocalyptic number.

It is an amenable number.

981464189 is a deficient number, since it is larger than the sum of its proper divisors (3732067).

981464189 is a wasteful number, since it uses less digits than its factorization.

981464189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732066.

The product of its digits is 497664, while the sum is 50.

The square root of 981464189 is about 31328.3288574415. The cubic root of 981464189 is about 993.7828231501.

The spelling of 981464189 in words is "nine hundred eighty-one million, four hundred sixty-four thousand, one hundred eighty-nine".