801324981 has 20 divisors (see below), whose sum is σ = 1260045600. Its totient is φ = 506099016.

The previous prime is 801324973. The next prime is 801324989. The reversal of 801324981 is 189423108.

It is an interprime number because it is at equal distance from previous prime (801324973) and next prime (801324989).

It is not a de Polignac number, because 801324981 - 2³ = 801324973 is a prime.

It is a super-2 number, since 2×801324981² = 1284243450349300722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801324989) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 258801 + ... + 261878.

It is an arithmetic number, because the mean of its divisors is an integer number (63002280).

Almost surely, 2^801324981 is an apocalyptic number.

801324981 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

801324981 is a deficient number, since it is larger than the sum of its proper divisors (458720619).

801324981 is a wasteful number, since it uses less digits than its factorization.

801324981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520710 (or 520701 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 801324981 is about 28307.6841334645. The cubic root of 801324981 is about 928.8299854610.

The spelling of 801324981 in words is "eight hundred one million, three hundred twenty-four thousand, nine hundred eighty-one".