1920071085 has 16 divisors (see below), whose sum is σ = 3073873920. Its totient is φ = 1023451200.

The previous prime is 1920071077. The next prime is 1920071099. The reversal of 1920071085 is 5801700291.

It is not a de Polignac number, because 1920071085 - 2³ = 1920071077 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 8941 + ... + 62610.

It is an arithmetic number, because the mean of its divisors is an integer number (192117120).

Almost surely, 2^1920071085 is an apocalyptic number.

1920071085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1920071085 is a deficient number, since it is larger than the sum of its proper divisors (1153802835).

1920071085 is a wasteful number, since it uses less digits than its factorization.

1920071085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73348.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 1920071085 is about 43818.6157357806. The cubic root of 1920071085 is about 1242.9083409160.

The spelling of 1920071085 in words is "one billion, nine hundred twenty million, seventy-one thousand, eighty-five".