1887003520172 has 6 divisors (see below), whose sum is σ = 3302256160308. Its totient is φ = 943501760084.

The previous prime is 1887003520169. The next prime is 1887003520177. The reversal of 1887003520172 is 2710253007881.

It is a super-2 number, since 2×1887003520172² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1887003520177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235875440018 + ... + 235875440025.

It is an arithmetic number, because the mean of its divisors is an integer number (550376026718).

Almost surely, 2^{1887003520172} is an apocalyptic number.

It is an amenable number.

1887003520172 is a deficient number, since it is larger than the sum of its proper divisors (1415252640136).

1887003520172 is a wasteful number, since it uses less digits than its factorization.

1887003520172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471750880047 (or 471750880045 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 1887003520172 in words is "one trillion, eight hundred eighty-seven billion, three million, five hundred twenty thousand, one hundred seventy-two".