981953281 has 8 divisors (see below), whose sum is σ = 1012587264. Its totient is φ = 951725280.

The previous prime is 981953267. The next prime is 981953293. The reversal of 981953281 is 182359189.

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

It is a cyclic number.

It is not a de Polignac number, because 981953281 - 2¹⁹ = 981428993 is a prime.

It is a super-2 number, since 2×981953281² = 1928464492133329922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981953381) 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, 96580 + ... + 106261.

It is an arithmetic number, because the mean of its divisors is an integer number (126573408).

Almost surely, 2^981953281 is an apocalyptic number.

It is an amenable number.

981953281 is a deficient number, since it is larger than the sum of its proper divisors (30633983).

981953281 is a wasteful number, since it uses less digits than its factorization.

981953281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202991.

The product of its digits is 155520, while the sum is 46.

The square root of 981953281 is about 31336.1337915193. The cubic root of 981953281 is about 993.9478726474.

The spelling of 981953281 in words is "nine hundred eighty-one million, nine hundred fifty-three thousand, two hundred eighty-one".