11641945 has 16 divisors (see below), whose sum is σ = 16087680. Its totient is φ = 7922304.

The previous prime is 11641943. The next prime is 11641951. The reversal of 11641945 is 54914611.

11641945 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11641945 - 2¹ = 11641943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11641943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3669 + ... + 6061.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^11641945 is an apocalyptic number.

It is an amenable number.

11641945 is a deficient number, since it is larger than the sum of its proper divisors (4445735).

11641945 is a wasteful number, since it uses less digits than its factorization.

11641945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its digits is 4320, while the sum is 31.

The square root of 11641945 is about 3412.0294547380. The cubic root of 11641945 is about 226.6427586760.

The spelling of 11641945 in words is "eleven million, six hundred forty-one thousand, nine hundred forty-five".