1890202 has 8 divisors (see below), whose sum is σ = 2841300. Its totient is φ = 943104.

The previous prime is 1890193. The next prime is 1890211. The reversal of 1890202 is 2020981.

It is an interprime number because it is at equal distance from previous prime (1890193) and next prime (1890211).

It can be written as a sum of positive squares in 2 ways, for example, as 1745041 + 145161 = 1321^2 + 381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 924 + ... + 2152.

2^1890202 is an apocalyptic number.

1890202 is a deficient number, since it is larger than the sum of its proper divisors (951098).

1890202 is a wasteful number, since it uses less digits than its factorization.

1890202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1890202 is about 1374.8461732136. The cubic root of 1890202 is about 123.6429635973.

The spelling of 1890202 in words is "one million, eight hundred ninety thousand, two hundred two".