10391532838 has 12 divisors (see below), whose sum is σ = 15623848188. Its totient is φ = 5183590440.

The previous prime is 10391532797. The next prime is 10391532857. The reversal of 10391532838 is 83823519301.

It is a junction number, because it is equal to n+sod(n) for n = 10391532794 and 10391532803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3192820 + ... + 3196072.

It is an arithmetic number, because the mean of its divisors is an integer number (1301987349).

Almost surely, 2^10391532838 is an apocalyptic number.

10391532838 is a deficient number, since it is larger than the sum of its proper divisors (5232315350).

10391532838 is an frugal number, since it uses more digits than its factorization.

10391532838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999 (or 3746 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 10391532838 in words is "ten billion, three hundred ninety-one million, five hundred thirty-two thousand, eight hundred thirty-eight".