4491001506 has 8 divisors (see below), whose sum is σ = 8982003024. Its totient is φ = 1497000500.

The previous prime is 4491001453. The next prime is 4491001507. The reversal of 4491001506 is 6051001944.

It is a happy number.

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

4491001506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (4491001507) 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, 374250120 + ... + 374250131.

It is an arithmetic number, because the mean of its divisors is an integer number (1122750378).

Almost surely, 2^4491001506 is an apocalyptic number.

4491001506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4491001506 is a wasteful number, since it uses less digits than its factorization.

4491001506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748500256.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 4491001506 is about 67014.9349473683. The cubic root of 4491001506 is about 1649.8624318731.

The spelling of 4491001506 in words is "four billion, four hundred ninety-one million, one thousand, five hundred six".