2164624541 has 4 divisors (see below), whose sum is σ = 2165292000. Its totient is φ = 2163957084.

The previous prime is 2164624537. The next prime is 2164624577. The reversal of 2164624541 is 1454264612.

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 a cyclic number.

It is not a de Polignac number, because 2164624541 - 2² = 2164624537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164624531) 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, 328841 + ... + 335358.

It is an arithmetic number, because the mean of its divisors is an integer number (541323000).

Almost surely, 2^2164624541 is an apocalyptic number.

It is an amenable number.

2164624541 is a deficient number, since it is larger than the sum of its proper divisors (667459).

2164624541 is an equidigital number, since it uses as much as digits as its factorization.

2164624541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667458.

The product of its digits is 46080, while the sum is 35.

The square root of 2164624541 is about 46525.5256928925. The cubic root of 2164624541 is about 1293.5826815724.

The spelling of 2164624541 in words is "two billion, one hundred sixty-four million, six hundred twenty-four thousand, five hundred forty-one".