1890925 has 12 divisors (see below), whose sum is σ = 2400640. Its totient is φ = 1476720.

The previous prime is 1890923. The next prime is 1890953. The reversal of 1890925 is 5290981.

It is not a de Polignac number, because 1890925 - 2¹ = 1890923 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 1954.

2^1890925 is an apocalyptic number.

It is an amenable number.

1890925 is a deficient number, since it is larger than the sum of its proper divisors (509715).

1890925 is a wasteful number, since it uses less digits than its factorization.

1890925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1890925 is about 1375.1090865819. The cubic root of 1890925 is about 123.6587260162.

The spelling of 1890925 in words is "one million, eight hundred ninety thousand, nine hundred twenty-five".