1890328247 has 16 divisors (see below), whose sum is σ = 1955923200. Its totient is φ = 1825767360.

The previous prime is 1890328229. The next prime is 1890328309. The reversal of 1890328247 is 7428230981.

It is a cyclic number.

It is not a de Polignac number, because 1890328247 - 2¹² = 1890324151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1890328198 and 1890328207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890328217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2252654 + ... + 2253492.

It is an arithmetic number, because the mean of its divisors is an integer number (122245200).

Almost surely, 2^1890328247 is an apocalyptic number.

1890328247 is a deficient number, since it is larger than the sum of its proper divisors (65594953).

1890328247 is a wasteful number, since it uses less digits than its factorization.

1890328247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 1890328247 is about 43477.9052738285. The cubic root of 1890328247 is about 1236.4571624943.

The spelling of 1890328247 in words is "one billion, eight hundred ninety million, three hundred twenty-eight thousand, two hundred forty-seven".