9642381 has 16 divisors (see below), whose sum is σ = 14745600. Its totient is φ = 5490288.

The previous prime is 9642377. The next prime is 9642389. The reversal of 9642381 is 1832469.

It is not a de Polignac number, because 9642381 - 2² = 9642377 is a prime.

It is a super-2 number, since 2×9642381² = 185951022698322, which contains 22 as substring.

It is a Curzon number.

9642381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9642389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6900 + ... + 8178.

It is an arithmetic number, because the mean of its divisors is an integer number (921600).

Almost surely, 2^9642381 is an apocalyptic number.

It is an amenable number.

9642381 is a deficient number, since it is larger than the sum of its proper divisors (5103219).

9642381 is a wasteful number, since it uses less digits than its factorization.

9642381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648.

The product of its digits is 10368, while the sum is 33.

The square root of 9642381 is about 3105.2183498105. The cubic root of 9642381 is about 212.8440084255.

The spelling of 9642381 in words is "nine million, six hundred forty-two thousand, three hundred eighty-one".