981481577 has 8 divisors (see below), whose sum is σ = 990185472. Its totient is φ = 972815200.

The previous prime is 981481561. The next prime is 981481601. The reversal of 981481577 is 775184189.

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 981481577 - 2⁴ = 981481561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981481177) 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, 44528 + ... + 62814.

It is an arithmetic number, because the mean of its divisors is an integer number (123773184).

Almost surely, 2^981481577 is an apocalyptic number.

It is an amenable number.

981481577 is a deficient number, since it is larger than the sum of its proper divisors (8703895).

981481577 is a wasteful number, since it uses less digits than its factorization.

981481577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18759.

The product of its digits is 564480, while the sum is 50.

The square root of 981481577 is about 31328.6063686210. The cubic root of 981481577 is about 993.7886918627.

The spelling of 981481577 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred seventy-seven".