9138449382 has 32 divisors (see below), whose sum is σ = 19359793152. Its totient is φ = 2865811584.

The previous prime is 9138449351. The next prime is 9138449431. The reversal of 9138449382 is 2839448319.

It is a super-2 number, since 2×9138449382² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent 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, 257403 + ... + 290745.

It is an arithmetic number, because the mean of its divisors is an integer number (604993536).

Almost surely, 2^9138449382 is an apocalyptic number.

9138449382 is an abundant number, since it is smaller than the sum of its proper divisors (10221343770).

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

9138449382 is a wasteful number, since it uses less digits than its factorization.

9138449382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36052.

The product of its digits is 1492992, while the sum is 51.

The square root of 9138449382 is about 95595.2372349167. The cubic root of 9138449382 is about 2090.6957522749.

The spelling of 9138449382 in words is "nine billion, one hundred thirty-eight million, four hundred forty-nine thousand, three hundred eighty-two".