1890495 has 24 divisors (see below), whose sum is σ = 3356496. Its totient is φ = 983808.

The previous prime is 1890487. The next prime is 1890509. The reversal of 1890495 is 5940981.

It is not a de Polignac number, because 1890495 - 2³ = 1890487 is a prime.

1890495 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1447 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (139854).

2^1890495 is an apocalyptic number.

1890495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1890495 is a deficient number, since it is larger than the sum of its proper divisors (1466001).

1890495 is a wasteful number, since it uses less digits than its factorization.

1890495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1890495 is about 1374.9527264601. The cubic root of 1890495 is about 123.6493518945.

The spelling of 1890495 in words is "one million, eight hundred ninety thousand, four hundred ninety-five".