38443287890 has 16 divisors (see below), whose sum is σ = 79083335232. Its totient is φ = 13180555824.

The previous prime is 38443287881. The next prime is 38443287899. The reversal of 38443287890 is 9878234483.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (38443287881) and next prime (38443287899).

It is not an unprimeable number, because it can be changed into a prime (38443287899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274594844 + ... + 274594983.

It is an arithmetic number, because the mean of its divisors is an integer number (4942708452).

Almost surely, 2^38443287890 is an apocalyptic number.

38443287890 is an abundant number, since it is smaller than the sum of its proper divisors (40640047342).

38443287890 is a wasteful number, since it uses less digits than its factorization.

38443287890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549189841.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 38443287890 in words is "thirty-eight billion, four hundred forty-three million, two hundred eighty-seven thousand, eight hundred ninety".