11451913 has 4 divisors (see below), whose sum is σ = 12493008. Its totient is φ = 10410820.

The previous prime is 11451911. The next prime is 11451929. The reversal of 11451913 is 31915411.

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: 31915411 = 11 ⋅2901401.

It is a cyclic number.

It is not a de Polignac number, because 11451913 - 2¹ = 11451911 is a prime.

It is a super-2 number, since 2×11451913² = 262292622719138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11451911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520531 + ... + 520552.

It is an arithmetic number, because the mean of its divisors is an integer number (3123252).

Almost surely, 2^11451913 is an apocalyptic number.

It is an amenable number.

11451913 is a deficient number, since it is larger than the sum of its proper divisors (1041095).

11451913 is a wasteful number, since it uses less digits than its factorization.

11451913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041094.

The product of its digits is 540, while the sum is 25.

The square root of 11451913 is about 3384.0675229670. The cubic root of 11451913 is about 225.4028207805.

The spelling of 11451913 in words is "eleven million, four hundred fifty-one thousand, nine hundred thirteen".