900444374181 has 24 divisors (see below), whose sum is σ = 1432142640864. Its totient is φ = 540623633760.

The previous prime is 900444374153. The next prime is 900444374197. The reversal of 900444374181 is 181473444009.

900444374181 is a `hidden beast` number, since 90 + 0 + 4 + 443 + 7 + 41 + 81 = 666.

It is not a de Polignac number, because 900444374181 - 2¹⁸ = 900444112037 is a prime.

It is a super-2 number, since 2×900444374181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900444374581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42491266 + ... + 42512451.

It is an arithmetic number, because the mean of its divisors is an integer number (59672610036).

Almost surely, 2^900444374181 is an apocalyptic number.

It is an amenable number.

900444374181 is a deficient number, since it is larger than the sum of its proper divisors (531698266683).

900444374181 is a wasteful number, since it uses less digits than its factorization.

900444374181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85003841 (or 85003838 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 900444374181 in words is "nine hundred billion, four hundred forty-four million, three hundred seventy-four thousand, one hundred eighty-one".