4181091 has 4 divisors (see below), whose sum is σ = 5574792. Its totient is φ = 2787392.

The previous prime is 4181087. The next prime is 4181129. The reversal of 4181091 is 1901814.

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 4181091 - 2² = 4181087 is a prime.

It is a D-number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (4181041) 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, 696846 + ... + 696851.

It is an arithmetic number, because the mean of its divisors is an integer number (1393698).

Almost surely, 2^4181091 is an apocalyptic number.

4181091 is a deficient number, since it is larger than the sum of its proper divisors (1393701).

4181091 is a wasteful number, since it uses less digits than its factorization.

4181091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393700.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 4181091 is about 2044.7716253900. The cubic root of 4181091 is about 161.1003707818.

The spelling of 4181091 in words is "four million, one hundred eighty-one thousand, ninety-one".