2091871528 has 16 divisors (see below), whose sum is σ = 4092792480. Its totient is φ = 1000460208.

The previous prime is 2091871517. The next prime is 2091871531. The reversal of 2091871528 is 8251781902.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684250 + ... + 5684617.

It is an arithmetic number, because the mean of its divisors is an integer number (255799530).

Almost surely, 2^2091871528 is an apocalyptic number.

It is an amenable number.

2091871528 is a deficient number, since it is larger than the sum of its proper divisors (2000920952).

2091871528 is a wasteful number, since it uses less digits than its factorization.

2091871528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11368896 (or 11368892 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 2091871528 is about 45736.9820604727. The cubic root of 2091871528 is about 1278.9247822765.

The spelling of 2091871528 in words is "two billion, ninety-one million, eight hundred seventy-one thousand, five hundred twenty-eight".