41819661 has 24 divisors (see below), whose sum is σ = 65552760. Its totient is φ = 25537536.

The previous prime is 41819647. The next prime is 41819663. The reversal of 41819661 is 16691814.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2205225 + 39614436 = 1485^2 + 6294^2 .

It is not a de Polignac number, because 41819661 - 2⁵ = 41819629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41819663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14725 + ... + 17333.

It is an arithmetic number, because the mean of its divisors is an integer number (2731365).

Almost surely, 2^41819661 is an apocalyptic number.

It is an amenable number.

41819661 is a deficient number, since it is larger than the sum of its proper divisors (23733099).

41819661 is a wasteful number, since it uses less digits than its factorization.

41819661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765 (or 2762 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 41819661 is about 6466.8122749930. The cubic root of 41819661 is about 347.1044402657.

The spelling of 41819661 in words is "forty-one million, eight hundred nineteen thousand, six hundred sixty-one".