8981455513 has 4 divisors (see below), whose sum is σ = 8983139328. Its totient is φ = 8979771700.

The previous prime is 8981455493. The next prime is 8981455519. The reversal of 8981455513 is 3155541898.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3155541898 = 2 ⋅1577770949.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8981455513 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8981455519) 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, 833881 + ... + 844582.

It is an arithmetic number, because the mean of its divisors is an integer number (2245784832).

Almost surely, 2^8981455513 is an apocalyptic number.

It is an amenable number.

8981455513 is a deficient number, since it is larger than the sum of its proper divisors (1683815).

8981455513 is a wasteful number, since it uses less digits than its factorization.

8981455513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683814.

The product of its digits is 864000, while the sum is 49.

The square root of 8981455513 is about 94770.5413775821. The cubic root of 8981455513 is about 2078.6541707654.

The spelling of 8981455513 in words is "eight billion, nine hundred eighty-one million, four hundred fifty-five thousand, five hundred thirteen".