9011381388 has 24 divisors (see below), whose sum is σ = 21037162608. Its totient is φ = 3002278656.

The previous prime is 9011381377. The next prime is 9011381399. The reversal of 9011381388 is 8831831109.

It is an interprime number because it is at equal distance from previous prime (9011381377) and next prime (9011381399).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164481 + ... + 212312.

It is an arithmetic number, because the mean of its divisors is an integer number (876548442).

Almost surely, 2^9011381388 is an apocalyptic number.

It is an amenable number.

9011381388 is an abundant number, since it is smaller than the sum of its proper divisors (12025781220).

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

9011381388 is a wasteful number, since it uses less digits than its factorization.

9011381388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378793 (or 378791 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 9011381388 is about 94928.2960344280. The cubic root of 9011381388 is about 2080.9602774444.

The spelling of 9011381388 in words is "nine billion, eleven million, three hundred eighty-one thousand, three hundred eighty-eight".