981481641 has 16 divisors (see below), whose sum is σ = 1506355200. Its totient is φ = 556810128.

The previous prime is 981481609. The next prime is 981481663. The reversal of 981481641 is 146184189.

It is a happy number.

It is not a de Polignac number, because 981481641 - 2⁵ = 981481609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981481593 and 981481602.

It is not an unprimeable number, because it can be changed into a prime (981481601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165201 + ... + 171038.

It is an arithmetic number, because the mean of its divisors is an integer number (94147200).

Almost surely, 2^981481641 is an apocalyptic number.

It is an amenable number.

981481641 is a deficient number, since it is larger than the sum of its proper divisors (524873559).

981481641 is a wasteful number, since it uses less digits than its factorization.

981481641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336388.

The product of its digits is 55296, while the sum is 42.

The square root of 981481641 is about 31328.6073900517. The cubic root of 981481641 is about 993.7887134635.

The spelling of 981481641 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, six hundred forty-one".