2321678138 has 16 divisors (see below), whose sum is σ = 3764253696. Its totient is φ = 1067586480.

The previous prime is 2321678137. The next prime is 2321678141. The reversal of 2321678138 is 8318761232.

It is a junction number, because it is equal to n+sod(n) for n = 2321678095 and 2321678104.

It is not an unprimeable number, because it can be changed into a prime (2321678137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157706 + ... + 171797.

It is an arithmetic number, because the mean of its divisors is an integer number (235265856).

Almost surely, 2^2321678138 is an apocalyptic number.

2321678138 is a deficient number, since it is larger than the sum of its proper divisors (1442575558).

2321678138 is a wasteful number, since it uses less digits than its factorization.

2321678138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329789.

The product of its digits is 96768, while the sum is 41.

The square root of 2321678138 is about 48183.7953880763. The cubic root of 2321678138 is about 1324.1403015615.

The spelling of 2321678138 in words is "two billion, three hundred twenty-one million, six hundred seventy-eight thousand, one hundred thirty-eight".