8391545090 has 32 divisors (see below), whose sum is σ = 15160867200. Its totient is φ = 3344180224.

The previous prime is 8391545087. The next prime is 8391545179. The reversal of 8391545090 is 905451938.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5221067 + ... + 5222673.

It is an arithmetic number, because the mean of its divisors is an integer number (473777100).

Almost surely, 2^8391545090 is an apocalyptic number.

8391545090 is a deficient number, since it is larger than the sum of its proper divisors (6769322110).

8391545090 is a wasteful number, since it uses less digits than its factorization.

8391545090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 8391545090 is about 91605.3769710054. The cubic root of 8391545090 is about 2032.1104577112.

The spelling of 8391545090 in words is "eight billion, three hundred ninety-one million, five hundred forty-five thousand, ninety".