11982513 has 4 divisors (see below), whose sum is σ = 15976688. Its totient is φ = 7988340.

The previous prime is 11982511. The next prime is 11982527. The reversal of 11982513 is 31528911.

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.

It is not a de Polignac number, because 11982513 - 2¹ = 11982511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11982511) 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, 1997083 + ... + 1997088.

It is an arithmetic number, because the mean of its divisors is an integer number (3994172).

Almost surely, 2^11982513 is an apocalyptic number.

It is an amenable number.

11982513 is a deficient number, since it is larger than the sum of its proper divisors (3994175).

11982513 is an equidigital number, since it uses as much as digits as its factorization.

11982513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994174.

The product of its digits is 2160, while the sum is 30.

The square root of 11982513 is about 3461.5766638918. The cubic root of 11982513 is about 228.8315854585.

The spelling of 11982513 in words is "eleven million, nine hundred eighty-two thousand, five hundred thirteen".