1981341324 has 36 divisors (see below), whose sum is σ = 5193889064. Its totient is φ = 660446784.

The previous prime is 1981341319. The next prime is 1981341331. The reversal of 1981341324 is 4231431891.

1981341324 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×1981341324³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018237 + ... + 1020180.

Almost surely, 2^1981341324 is an apocalyptic number.

It is an amenable number.

1981341324 is an abundant number, since it is smaller than the sum of its proper divisors (3212547740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1981341324 is a wasteful number, since it uses less digits than its factorization.

1981341324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038436 (or 2038422 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1981341324 is about 44512.2603784620. The cubic root of 1981341324 is about 1255.9907255526.

The spelling of 1981341324 in words is "one billion, nine hundred eighty-one million, three hundred forty-one thousand, three hundred twenty-four".