981452159 has 4 divisors (see below), whose sum is σ = 1024124016. Its totient is φ = 938780304.

The previous prime is 981452117. The next prime is 981452179. The reversal of 981452159 is 951254189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 951254189 = 31 ⋅30685619.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981452159 is a prime.

It is a super-2 number, since 2×981452159² = 1926496680811522562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981452179) 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, 21335894 + ... + 21335939.

It is an arithmetic number, because the mean of its divisors is an integer number (256031004).

Almost surely, 2^981452159 is an apocalyptic number.

981452159 is a deficient number, since it is larger than the sum of its proper divisors (42671857).

981452159 is a wasteful number, since it uses less digits than its factorization.

981452159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42671856.

The product of its digits is 129600, while the sum is 44.

The square root of 981452159 is about 31328.1368581025. The cubic root of 981452159 is about 993.7787628029.

The spelling of 981452159 in words is "nine hundred eighty-one million, four hundred fifty-two thousand, one hundred fifty-nine".