2091543546 has 8 divisors (see below), whose sum is σ = 4183087104. Its totient is φ = 697181180.

The previous prime is 2091543529. The next prime is 2091543547. The reversal of 2091543546 is 6453451902.

It is a sphenic number, since it is the product of 3 distinct primes.

2091543546 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2091543547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174295290 + ... + 174295301.

It is an arithmetic number, because the mean of its divisors is an integer number (522885888).

Almost surely, 2^2091543546 is an apocalyptic number.

2091543546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2091543546 is a wasteful number, since it uses less digits than its factorization.

2091543546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348590596.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 2091543546 is about 45733.3963969439. The cubic root of 2091543546 is about 1278.8579384277.

The spelling of 2091543546 in words is "two billion, ninety-one million, five hundred forty-three thousand, five hundred forty-six".