4016781549 has 32 divisors (see below), whose sum is σ = 6503690880. Its totient is φ = 2429942400.

The previous prime is 4016781547. The next prime is 4016781611. The reversal of 4016781549 is 9451876104.

4016781549 is a `hidden beast` number, since 40 + 1 + 67 + 8 + 1 + 549 = 666.

It is not a de Polignac number, because 4016781549 - 2¹ = 4016781547 is a prime.

It is a super-2 number, since 2×4016781549² = 32269068024773678802, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4016781547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153289 + ... + 177569.

It is an arithmetic number, because the mean of its divisors is an integer number (203240340).

Almost surely, 2^4016781549 is an apocalyptic number.

It is an amenable number.

4016781549 is a deficient number, since it is larger than the sum of its proper divisors (2486909331).

4016781549 is a wasteful number, since it uses less digits than its factorization.

4016781549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24858 (or 24852 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 4016781549 is about 63378.0841379731. The cubic root of 4016781549 is about 1589.6178754195.

The spelling of 4016781549 in words is "four billion, sixteen million, seven hundred eighty-one thousand, five hundred forty-nine".