7918091 has 8 divisors (see below), whose sum is σ = 8134080. Its totient is φ = 7705152.

The previous prime is 7918081. The next prime is 7918093. The reversal of 7918091 is 1908197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7918091 - 2¹⁰ = 7917067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7918093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5081 + ... + 6453.

It is an arithmetic number, because the mean of its divisors is an integer number (1016760).

Almost surely, 2^7918091 is an apocalyptic number.

7918091 is a deficient number, since it is larger than the sum of its proper divisors (215989).

7918091 is a wasteful number, since it uses less digits than its factorization.

7918091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 7918091 is about 2813.9102686475. The cubic root of 7918091 is about 199.3150821150.

The spelling of 7918091 in words is "seven million, nine hundred eighteen thousand, ninety-one".