4815091 has 4 divisors (see below), whose sum is σ = 4832752. Its totient is φ = 4797432.

The previous prime is 4815071. The next prime is 4815101. The reversal of 4815091 is 1905184.

It is a happy number.

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 4815091 - 2⁵ = 4815059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4815071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8415 + ... + 8968.

It is an arithmetic number, because the mean of its divisors is an integer number (1208188).

Almost surely, 2^4815091 is an apocalyptic number.

4815091 is a deficient number, since it is larger than the sum of its proper divisors (17661).

4815091 is a wasteful number, since it uses less digits than its factorization.

4815091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17660.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 4815091 is about 2194.3315610910. The cubic root of 4815091 is about 168.8631292629.

The spelling of 4815091 in words is "four million, eight hundred fifteen thousand, ninety-one".