201887051804 has 24 divisors (see below), whose sum is σ = 365752830240. Its totient is φ = 97391341376.

The previous prime is 201887051791. The next prime is 201887051837. The reversal of 201887051804 is 408150788102.

It is a super-2 number, since 2×201887051804² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478007 + ... + 795150.

It is an arithmetic number, because the mean of its divisors is an integer number (15239701260).

Almost surely, 2^201887051804 is an apocalyptic number.

It is an amenable number.

201887051804 is a deficient number, since it is larger than the sum of its proper divisors (163865778436).

201887051804 is a wasteful number, since it uses less digits than its factorization.

201887051804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274557 (or 1274555 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 44.

The spelling of 201887051804 in words is "two hundred one billion, eight hundred eighty-seven million, fifty-one thousand, eight hundred four".