868892138 has 8 divisors (see below), whose sum is σ = 1315992288. Its totient is φ = 430228044.

The previous prime is 868892093. The next prime is 868892177. The reversal of 868892138 is 831298868.

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

It is a super-2 number, since 2×868892138² = 1509947094956422088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 868892138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2108756 + ... + 2109167.

It is an arithmetic number, because the mean of its divisors is an integer number (164499036).

Almost surely, 2^868892138 is an apocalyptic number.

868892138 is a deficient number, since it is larger than the sum of its proper divisors (447100150).

868892138 is a wasteful number, since it uses less digits than its factorization.

868892138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4218028.

The product of its digits is 1327104, while the sum is 53.

The square root of 868892138 is about 29476.9764053235. The cubic root of 868892138 is about 954.2348843769.

The spelling of 868892138 in words is "eight hundred sixty-eight million, eight hundred ninety-two thousand, one hundred thirty-eight".