1887142417881 has 48 divisors (see below), whose sum is σ = 2957731229376. Its totient is φ = 1067047962624.

The previous prime is 1887142417879. The next prime is 1887142417903.

1887142417881 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1887142417881 - 2¹ = 1887142417879 is a prime.

It is a super-2 number, since 2×1887142417881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1887142417801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108031710 + ... + 108049176.

It is an arithmetic number, because the mean of its divisors is an integer number (61619400612).

Almost surely, 2^{1887142417881} is an apocalyptic number.

It is an amenable number.

1887142417881 is a deficient number, since it is larger than the sum of its proper divisors (1070588811495).

1887142417881 is a wasteful number, since it uses less digits than its factorization.

1887142417881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25158 (or 25151 counting only the distinct ones).

The product of its digits is 6422528, while the sum is 60.

The spelling of 1887142417881 in words is "one trillion, eight hundred eighty-seven billion, one hundred forty-two million, four hundred seventeen thousand, eight hundred eighty-one".