1093971638 has 8 divisors (see below), whose sum is σ = 1656293832. Its totient is φ = 541873696.

The previous prime is 1093971631. The next prime is 1093971667. The reversal of 1093971638 is 8361793901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1093971592 and 1093971601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1093971631) 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, 2555795 + ... + 2556222.

It is an arithmetic number, because the mean of its divisors is an integer number (207036729).

Almost surely, 2^1093971638 is an apocalyptic number.

1093971638 is a deficient number, since it is larger than the sum of its proper divisors (562322194).

1093971638 is a wasteful number, since it uses less digits than its factorization.

1093971638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112126.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1093971638 is about 33075.2420701648. The cubic root of 1093971638 is about 1030.3909151798.

The spelling of 1093971638 in words is "one billion, ninety-three million, nine hundred seventy-one thousand, six hundred thirty-eight".