860143738 has 4 divisors (see below), whose sum is σ = 1290215610. Its totient is φ = 430071868.

The previous prime is 860143721. The next prime is 860143777. The reversal of 860143738 is 837341068.

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., 433597329 + 426546409 = 20823^2 + 20653^2 .

It is a super-2 number, since 2×860143738² = 1479694500041225288, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 860143738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215035933 + ... + 215035936.

Almost surely, 2^860143738 is an apocalyptic number.

860143738 is a deficient number, since it is larger than the sum of its proper divisors (430071872).

860143738 is a wasteful number, since it uses less digits than its factorization.

860143738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430071871.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 860143738 is about 29328.2072073968. The cubic root of 860143738 is about 951.0215190971.

The spelling of 860143738 in words is "eight hundred sixty million, one hundred forty-three thousand, seven hundred thirty-eight".