8018491 has 16 divisors (see below), whose sum is σ = 9047808. Its totient is φ = 7056000.

The previous prime is 8018477. The next prime is 8018497. The reversal of 8018491 is 1948108.

It is a cyclic number.

It is not a de Polignac number, because 8018491 - 2⁹ = 8017979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8018497) 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, 40605 + ... + 40801.

It is an arithmetic number, because the mean of its divisors is an integer number (565488).

Almost surely, 2^8018491 is an apocalyptic number.

8018491 is a deficient number, since it is larger than the sum of its proper divisors (1029317).

8018491 is a wasteful number, since it uses less digits than its factorization.

8018491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 8018491 is about 2831.6940159558. The cubic root of 8018491 is about 200.1539730977.

The spelling of 8018491 in words is "eight million, eighteen thousand, four hundred ninety-one".