1881768003161 has 16 divisors (see below), whose sum is σ = 1988285223360. Its totient is φ = 1776000582720.

The previous prime is 1881768003127. The next prime is 1881768003163. The reversal of 1881768003161 is 1613008671881.

It is a happy number.

It is not a de Polignac number, because 1881768003161 - 2⁶ = 1881768003097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1881768003163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36378326 + ... + 36430016.

It is an arithmetic number, because the mean of its divisors is an integer number (124267826460).

Almost surely, 2^{1881768003161} is an apocalyptic number.

It is an amenable number.

1881768003161 is a deficient number, since it is larger than the sum of its proper divisors (106517220199).

1881768003161 is a wasteful number, since it uses less digits than its factorization.

1881768003161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58904.

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 1881768003161 in words is "one trillion, eight hundred eighty-one billion, seven hundred sixty-eight million, three thousand, one hundred sixty-one".