11378649 has 4 divisors (see below), whose sum is σ = 15171536. Its totient is φ = 7585764.

The previous prime is 11378641. The next prime is 11378651. The reversal of 11378649 is 94687311.

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 11378649 - 2³ = 11378641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11378641) 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, 1896439 + ... + 1896444.

It is an arithmetic number, because the mean of its divisors is an integer number (3792884).

Almost surely, 2^11378649 is an apocalyptic number.

It is an amenable number.

11378649 is a deficient number, since it is larger than the sum of its proper divisors (3792887).

11378649 is an equidigital number, since it uses as much as digits as its factorization.

11378649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792886.

The product of its digits is 36288, while the sum is 39.

The square root of 11378649 is about 3373.2253111822. The cubic root of 11378649 is about 224.9211180273.

The spelling of 11378649 in words is "eleven million, three hundred seventy-eight thousand, six hundred forty-nine".