2091655320 has 64 divisors (see below), whose sum is σ = 6320160000. Its totient is φ = 553757568.

The previous prime is 2091655301. The next prime is 2091655327. The reversal of 2091655320 is 235561902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091655327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46020 + ... + 79379.

It is an arithmetic number, because the mean of its divisors is an integer number (98752500).

Almost surely, 2^2091655320 is an apocalyptic number.

2091655320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2091655320 is an abundant number, since it is smaller than the sum of its proper divisors (4228504680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2091655320 is a wasteful number, since it uses less digits than its factorization.

2091655320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125552 (or 125548 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 2091655320 is about 45734.6183978832. The cubic root of 2091655320 is about 1278.8807191345.

The spelling of 2091655320 in words is "two billion, ninety-one million, six hundred fifty-five thousand, three hundred twenty".