9378842287 has 4 divisors (see below), whose sum is σ = 9379716840. Its totient is φ = 9377967736.

The previous prime is 9378842281. The next prime is 9378842321. The reversal of 9378842287 is 7822488739.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9378842287 - 2¹⁵ = 9378809519 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9378842281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420988 + ... + 442705.

It is an arithmetic number, because the mean of its divisors is an integer number (2344929210).

Almost surely, 2^9378842287 is an apocalyptic number.

9378842287 is a deficient number, since it is larger than the sum of its proper divisors (874553).

9378842287 is a wasteful number, since it uses less digits than its factorization.

9378842287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874552.

The product of its digits is 10838016, while the sum is 58.

The square root of 9378842287 is about 96844.4231073736. The cubic root of 9378842287 is about 2108.8696870533.

The spelling of 9378842287 in words is "nine billion, three hundred seventy-eight million, eight hundred forty-two thousand, two hundred eighty-seven".