4160781 has 16 divisors (see below), whose sum is σ = 6251520. Its totient is φ = 2734560.

The previous prime is 4160729. The next prime is 4160797. The reversal of 4160781 is 1870614.

It is a happy number.

It is not a de Polignac number, because 4160781 - 2⁹ = 4160269 is a prime.

It is a super-2 number, since 2×4160781² = 34624197059922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4160711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 916 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (390720).

Almost surely, 2^4160781 is an apocalyptic number.

It is an amenable number.

4160781 is a deficient number, since it is larger than the sum of its proper divisors (2090739).

4160781 is a wasteful number, since it uses less digits than its factorization.

4160781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 4160781 is about 2039.7992548288. The cubic root of 4160781 is about 160.8390944151.

The spelling of 4160781 in words is "four million, one hundred sixty thousand, seven hundred eighty-one".