1872424872163 has 4 divisors (see below), whose sum is σ = 1982567511720. Its totient is φ = 1762282232608.

The previous prime is 1872424872107. The next prime is 1872424872193. The reversal of 1872424872163 is 3612784242781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1872424872163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1872424872193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55071319753 + ... + 55071319786.

It is an arithmetic number, because the mean of its divisors is an integer number (495641877930).

Almost surely, 2^{1872424872163} is an apocalyptic number.

1872424872163 is a deficient number, since it is larger than the sum of its proper divisors (110142639557).

1872424872163 is a wasteful number, since it uses less digits than its factorization.

1872424872163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110142639556.

The product of its digits is 7225344, while the sum is 55.

The spelling of 1872424872163 in words is "one trillion, eight hundred seventy-two billion, four hundred twenty-four million, eight hundred seventy-two thousand, one hundred sixty-three".