2870680138 has 4 divisors (see below), whose sum is σ = 4306020210. Its totient is φ = 1435340068.

The previous prime is 2870680103. The next prime is 2870680139. The reversal of 2870680138 is 8310860782.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1537188849 + 1333491289 = 39207^2 + 36517^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2870680094 and 2870680103.

It is not an unprimeable number, because it can be changed into a prime (2870680139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 717670033 + ... + 717670036.

Almost surely, 2^2870680138 is an apocalyptic number.

2870680138 is a deficient number, since it is larger than the sum of its proper divisors (1435340072).

2870680138 is a wasteful number, since it uses less digits than its factorization.

2870680138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435340071.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 2870680138 is about 53578.7284096963. The cubic root of 2870680138 is about 1421.2209524717.

The spelling of 2870680138 in words is "two billion, eight hundred seventy million, six hundred eighty thousand, one hundred thirty-eight".