1890540425 has 12 divisors (see below), whose sum is σ = 2419892736. Its totient is φ = 1463643600.

The previous prime is 1890540391. The next prime is 1890540473. The reversal of 1890540425 is 5240450981.

It is not a de Polignac number, because 1890540425 - 2¹⁶ = 1890474889 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1218929 + ... + 1220478.

It is an arithmetic number, because the mean of its divisors is an integer number (201657728).

Almost surely, 2^1890540425 is an apocalyptic number.

It is an amenable number.

1890540425 is a deficient number, since it is larger than the sum of its proper divisors (529352311).

1890540425 is a wasteful number, since it uses less digits than its factorization.

1890540425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439448 (or 2439443 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1890540425 is about 43480.3452723182. The cubic root of 1890540425 is about 1236.5034223953.

The spelling of 1890540425 in words is "one billion, eight hundred ninety million, five hundred forty thousand, four hundred twenty-five".