1990895470 has 16 divisors (see below), whose sum is σ = 3584318688. Its totient is φ = 796201120.

The previous prime is 1990895461. The next prime is 1990895503. The reversal of 1990895470 is 745980991.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43167 + ... + 76453.

It is an arithmetic number, because the mean of its divisors is an integer number (224019918).

Almost surely, 2^1990895470 is an apocalyptic number.

1990895470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1990895470 is a deficient number, since it is larger than the sum of its proper divisors (1593423218).

1990895470 is a wasteful number, since it uses less digits than its factorization.

1990895470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39275.

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 1990895470 is about 44619.4516999033. The cubic root of 1990895470 is about 1258.0063099817.

The spelling of 1990895470 in words is "one billion, nine hundred ninety million, eight hundred ninety-five thousand, four hundred seventy".