981481515 has 24 divisors (see below), whose sum is σ = 1826758800. Its totient is φ = 448676928.

The previous prime is 981481477. The next prime is 981481559. The reversal of 981481515 is 515184189.

It is not a de Polignac number, because 981481515 - 2⁹ = 981481003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 666940 + ... + 668409.

It is an arithmetic number, because the mean of its divisors is an integer number (76114950).

Almost surely, 2^981481515 is an apocalyptic number.

981481515 is a deficient number, since it is larger than the sum of its proper divisors (845277285).

981481515 is a wasteful number, since it uses less digits than its factorization.

981481515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335371 (or 1335364 counting only the distinct ones).

The product of its digits is 57600, while the sum is 42.

The square root of 981481515 is about 31328.6053791100. The cubic root of 981481515 is about 993.7886709369.

The spelling of 981481515 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred fifteen".