9016381 has 16 divisors (see below), whose sum is σ = 10280448. Its totient is φ = 7833600.

The previous prime is 9016367. The next prime is 9016411. The reversal of 9016381 is 1836109.

It is a happy number.

9016381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

9016381 is a nontrivial binomial coefficient, being equal to C(4247, 2).

It is a cyclic number.

It is not a de Polignac number, because 9016381 - 2¹⁷ = 8885309 is a prime.

It is a super-2 number, since 2×9016381² = 162590252674322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9016481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46621 + ... + 46813.

It is an arithmetic number, because the mean of its divisors is an integer number (642528).

Almost surely, 2^9016381 is an apocalyptic number.

9016381 is the 4246-th triangular number.

9016381 is the 1416-th centered nonagonal number.

It is an amenable number.

9016381 is a deficient number, since it is larger than the sum of its proper divisors (1264067).

9016381 is a wasteful number, since it uses less digits than its factorization.

9016381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9016381 is about 3002.7289254943. The cubic root of 9016381 is about 208.1345052728.

It can be divided in two parts, 90 and 16381, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 9016381 in words is "nine million, sixteen thousand, three hundred eighty-one".