1840103581428 has 36 divisors (see below), whose sum is σ = 5315854791520. Its totient is φ = 525743880336.

The previous prime is 1840103581417. The next prime is 1840103581429. The reversal of 1840103581428 is 8241853010481.

1840103581428 is a `hidden beast` number, since 1 + 8 + 40 + 1 + 0 + 3 + 581 + 4 + 28 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840103581429) 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, 3650998918 + ... + 3650999421.

Almost surely, 2^{1840103581428} is an apocalyptic number.

1840103581428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1840103581428 is an abundant number, since it is smaller than the sum of its proper divisors (3475751210092).

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

1840103581428 is a wasteful number, since it uses less digits than its factorization.

1840103581428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301998356 (or 7301998351 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 1840103581428 in words is "one trillion, eight hundred forty billion, one hundred three million, five hundred eighty-one thousand, four hundred twenty-eight".