38431444486 has 4 divisors (see below), whose sum is σ = 57647166732. Its totient is φ = 19215722242.

The previous prime is 38431444481. The next prime is 38431444507. The reversal of 38431444486 is 68444413483.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38431444481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9607861120 + ... + 9607861123.

It is an arithmetic number, because the mean of its divisors is an integer number (14411791683).

Almost surely, 2^38431444486 is an apocalyptic number.

38431444486 is a deficient number, since it is larger than the sum of its proper divisors (19215722246).

38431444486 is a wasteful number, since it uses less digits than its factorization.

38431444486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19215722245.

The product of its digits is 3538944, while the sum is 49.

The spelling of 38431444486 in words is "thirty-eight billion, four hundred thirty-one million, four hundred forty-four thousand, four hundred eighty-six".