41981564 has 48 divisors (see below), whose sum is σ = 81070080. Its totient is φ = 18947520.

The previous prime is 41981549. The next prime is 41981573. The reversal of 41981564 is 46518914.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

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, 242582 + ... + 242754.

It is an arithmetic number, because the mean of its divisors is an integer number (1688960).

Almost surely, 2^41981564 is an apocalyptic number.

It is an amenable number.

41981564 is a deficient number, since it is larger than the sum of its proper divisors (39088516).

41981564 is a wasteful number, since it uses less digits than its factorization.

41981564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 328 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 41981564 is about 6479.3181740057. The cubic root of 41981564 is about 347.5517967060.

The spelling of 41981564 in words is "forty-one million, nine hundred eighty-one thousand, five hundred sixty-four".