1890752066 has 8 divisors (see below), whose sum is σ = 3241289280. Its totient is φ = 810322308.

The previous prime is 1890752029. The next prime is 1890752069. The reversal of 1890752066 is 6602570981.

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

It is not an unprimeable number, because it can be changed into a prime (1890752069) 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 3 ways as a sum of consecutive naturals, for example, 67526846 + ... + 67526873.

It is an arithmetic number, because the mean of its divisors is an integer number (405161160).

Almost surely, 2^1890752066 is an apocalyptic number.

1890752066 is a deficient number, since it is larger than the sum of its proper divisors (1350537214).

1890752066 is a wasteful number, since it uses less digits than its factorization.

1890752066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135053728.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1890752066 is about 43482.7789590316. The cubic root of 1890752066 is about 1236.5495617694.

The spelling of 1890752066 in words is "one billion, eight hundred ninety million, seven hundred fifty-two thousand, sixty-six".