2138863746 has 8 divisors (see below), whose sum is σ = 4277727504. Its totient is φ = 712954580.

The previous prime is 2138863729. The next prime is 2138863747. The reversal of 2138863746 is 6473688312.

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

2138863746 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2138863695 and 2138863704.

It is not an unprimeable number, because it can be changed into a prime (2138863747) 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, 178238640 + ... + 178238651.

It is an arithmetic number, because the mean of its divisors is an integer number (534715938).

Almost surely, 2^2138863746 is an apocalyptic number.

2138863746 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2138863746 is a wasteful number, since it uses less digits than its factorization.

2138863746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356477296.

The product of its digits is 1161216, while the sum is 48.

The square root of 2138863746 is about 46247.8512581936. The cubic root of 2138863746 is about 1288.4306268289.

The spelling of 2138863746 in words is "two billion, one hundred thirty-eight million, eight hundred sixty-three thousand, seven hundred forty-six".