20102694238 has 8 divisors (see below), whose sum is σ = 32895317880. Its totient is φ = 9137588280.

The previous prime is 20102694233. The next prime is 20102694247. The reversal of 20102694238 is 83249620102.

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 = 20102694197 and 20102694206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102694233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456879393 + ... + 456879436.

It is an arithmetic number, because the mean of its divisors is an integer number (4111914735).

Almost surely, 2^20102694238 is an apocalyptic number.

20102694238 is a deficient number, since it is larger than the sum of its proper divisors (12792623642).

20102694238 is a wasteful number, since it uses less digits than its factorization.

20102694238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913758842.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 20102694238 in words is "twenty billion, one hundred two million, six hundred ninety-four thousand, two hundred thirty-eight".