1890252399 has 16 divisors (see below), whose sum is σ = 2912751360. Its totient is φ = 1068006720.

The previous prime is 1890252391. The next prime is 1890252421. The reversal of 1890252399 is 9932520981.

It is not a de Polignac number, because 1890252399 - 2³ = 1890252391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890252391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503817 + ... + 507554.

It is an arithmetic number, because the mean of its divisors is an integer number (182046960).

Almost surely, 2^1890252399 is an apocalyptic number.

1890252399 is a deficient number, since it is larger than the sum of its proper divisors (1022498961).

1890252399 is a wasteful number, since it uses less digits than its factorization.

1890252399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011470.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 1890252399 is about 43477.0330059446. The cubic root of 1890252399 is about 1236.4406249683.

The spelling of 1890252399 in words is "one billion, eight hundred ninety million, two hundred fifty-two thousand, three hundred ninety-nine".