9381044691 has 12 divisors (see below), whose sum is σ = 13552480968. Its totient is φ = 6253068384.

The previous prime is 9381044677. The next prime is 9381044693. The reversal of 9381044691 is 1964401839.

It is not a de Polignac number, because 9381044691 - 2²² = 9376850387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9381044693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15585 + ... + 137858.

It is an arithmetic number, because the mean of its divisors is an integer number (1129373414).

Almost surely, 2^9381044691 is an apocalyptic number.

9381044691 is a deficient number, since it is larger than the sum of its proper divisors (4171436277).

9381044691 is a wasteful number, since it uses less digits than its factorization.

9381044691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160242 (or 160239 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 9381044691 is about 96855.7932753638. The cubic root of 9381044691 is about 2109.0347472097.

The spelling of 9381044691 in words is "nine billion, three hundred eighty-one million, forty-four thousand, six hundred ninety-one".