861374163 has 16 divisors (see below), whose sum is σ = 1237453056. Its totient is φ = 529815840.

The previous prime is 861374149. The next prime is 861374191. The reversal of 861374163 is 361473168.

It is not a de Polignac number, because 861374163 - 2⁴ = 861374147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (861374263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101656 + ... + 109802.

It is an arithmetic number, because the mean of its divisors is an integer number (77340816).

Almost surely, 2^861374163 is an apocalyptic number.

861374163 is a deficient number, since it is larger than the sum of its proper divisors (376078893).

861374163 is a wasteful number, since it uses less digits than its factorization.

861374163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10874.

The product of its digits is 72576, while the sum is 39.

The square root of 861374163 is about 29349.1765301856. The cubic root of 861374163 is about 951.4747778868.

The spelling of 861374163 in words is "eight hundred sixty-one million, three hundred seventy-four thousand, one hundred sixty-three".