1890486 has 32 divisors (see below), whose sum is σ = 4525920. Its totient is φ = 581472.

The previous prime is 1890479. The next prime is 1890487. The reversal of 1890486 is 6840981.

It is a happy number.

It is a super-3 number, since 3×1890486³ = 20269435383438333768, which contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1890486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645 + ... + 2048.

It is an arithmetic number, because the mean of its divisors is an integer number (141435).

2^1890486 is an apocalyptic number.

1890486 is an abundant number, since it is smaller than the sum of its proper divisors (2635434).

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

1890486 is a wasteful number, since it uses less digits than its factorization.

1890486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1890486 is about 1374.9494536164. The cubic root of 1890486 is about 123.6491556768.

The spelling of 1890486 in words is "one million, eight hundred ninety thousand, four hundred eighty-six".