38991302789 has 24 divisors (see below), whose sum is σ = 42188221440. Its totient is φ = 36014575392.

The previous prime is 38991302773. The next prime is 38991302797. The reversal of 38991302789 is 98720319983.

It is not a de Polignac number, because 38991302789 - 2⁴ = 38991302773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38991302719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4559852 + ... + 4568394.

It is an arithmetic number, because the mean of its divisors is an integer number (1757842560).

Almost surely, 2^38991302789 is an apocalyptic number.

It is an amenable number.

38991302789 is a deficient number, since it is larger than the sum of its proper divisors (3196918651).

38991302789 is a wasteful number, since it uses less digits than its factorization.

38991302789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897 (or 8878 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 59.

The spelling of 38991302789 in words is "thirty-eight billion, nine hundred ninety-one million, three hundred two thousand, seven hundred eighty-nine".