41643919 has 4 divisors (see below), whose sum is σ = 41792400. Its totient is φ = 41495440.

The previous prime is 41643893. The next prime is 41643923. The reversal of 41643919 is 91934614.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 41643919 - 2⁵ = 41643887 is a prime.

It is a super-2 number, since 2×41643919² = 3468431979357122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41643949) 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, 73819 + ... + 74380.

It is an arithmetic number, because the mean of its divisors is an integer number (10448100).

Almost surely, 2^41643919 is an apocalyptic number.

41643919 is a deficient number, since it is larger than the sum of its proper divisors (148481).

41643919 is a wasteful number, since it uses less digits than its factorization.

41643919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148480.

The product of its digits is 23328, while the sum is 37.

The square root of 41643919 is about 6453.2099764381. The cubic root of 41643919 is about 346.6175362861.

The spelling of 41643919 in words is "forty-one million, six hundred forty-three thousand, nine hundred nineteen".