1900227781404 has 36 divisors (see below), whose sum is σ = 4807168886520. Its totient is φ = 632906140320.

The previous prime is 1900227781381. The next prime is 1900227781409. The reversal of 1900227781404 is 4041877220091.

1900227781404 is a `hidden beast` number, since 19 + 0 + 0 + 227 + 7 + 8 + 1 + 404 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1900227781404² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900227781404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900227781409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20917387 + ... + 21008034.

It is an arithmetic number, because the mean of its divisors is an integer number (133532469070).

Almost surely, 2^{1900227781404} is an apocalyptic number.

It is an amenable number.

1900227781404 is an abundant number, since it is smaller than the sum of its proper divisors (2906941105116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1900227781404 is a wasteful number, since it uses less digits than its factorization.

1900227781404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41926690 (or 41926685 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 1900227781404 in words is "one trillion, nine hundred billion, two hundred twenty-seven million, seven hundred eighty-one thousand, four hundred four".