1890983559450 has 24 divisors (see below), whose sum is σ = 4689639227808. Its totient is φ = 504262282480.

The previous prime is 1890983559427. The next prime is 1890983559499. The reversal of 1890983559450 is 549553890981.

It is a super-2 number, since 2×1890983559450² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6303278382 + ... + 6303278681.

It is an arithmetic number, because the mean of its divisors is an integer number (195401634492).

Almost surely, 2^{1890983559450} is an apocalyptic number.

1890983559450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1890983559450 is an abundant number, since it is smaller than the sum of its proper divisors (2798655668358).

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

1890983559450 is a wasteful number, since it uses less digits than its factorization.

1890983559450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12606557078 (or 12606557073 counting only the distinct ones).

The product of its (nonzero) digits is 69984000, while the sum is 66.

The spelling of 1890983559450 in words is "one trillion, eight hundred ninety billion, nine hundred eighty-three million, five hundred fifty-nine thousand, four hundred fifty".