11513649 has 16 divisors (see below), whose sum is σ = 17718272. Its totient is φ = 6514128.

The previous prime is 11513647. The next prime is 11513657. The reversal of 11513649 is 94631511.

It is not a de Polignac number, because 11513649 - 2¹ = 11513647 is a prime.

It is a super-2 number, since 2×11513649² = 265128226590402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11513647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499 + ... + 4824.

It is an arithmetic number, because the mean of its divisors is an integer number (1107392).

Almost surely, 2^11513649 is an apocalyptic number.

It is an amenable number.

11513649 is a deficient number, since it is larger than the sum of its proper divisors (6204623).

11513649 is a wasteful number, since it uses less digits than its factorization.

11513649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5436.

The product of its digits is 3240, while the sum is 30.

The square root of 11513649 is about 3393.1768300517. The cubic root of 11513649 is about 225.8071356922.

The spelling of 11513649 in words is "eleven million, five hundred thirteen thousand, six hundred forty-nine".