1890482121 has 24 divisors (see below), whose sum is σ = 3135731040. Its totient is φ = 1085443200.

The previous prime is 1890482063. The next prime is 1890482123. The reversal of 1890482121 is 1212840981.

It is a happy number.

It is not a de Polignac number, because 1890482121 - 2¹¹ = 1890480073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1890482123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 500640 + ... + 504401.

It is an arithmetic number, because the mean of its divisors is an integer number (130655460).

Almost surely, 2^1890482121 is an apocalyptic number.

1890482121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1890482121 is a deficient number, since it is larger than the sum of its proper divisors (1245248919).

1890482121 is a wasteful number, since it uses less digits than its factorization.

1890482121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005077 (or 1005074 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1890482121 is about 43479.6748032917. The cubic root of 1890482121 is about 1236.4907110676.

It can be divided in two parts, 18904 and 82121, that added together give a triangular number (101025 = T₄₄₉).

The spelling of 1890482121 in words is "one billion, eight hundred ninety million, four hundred eighty-two thousand, one hundred twenty-one".