2099543254 has 4 divisors (see below), whose sum is σ = 3149314884. Its totient is φ = 1049771626.

The previous prime is 2099543249. The next prime is 2099543269. The reversal of 2099543254 is 4523459902.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2099543254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524885812 + ... + 524885815.

It is an arithmetic number, because the mean of its divisors is an integer number (787328721).

Almost surely, 2^2099543254 is an apocalyptic number.

2099543254 is a deficient number, since it is larger than the sum of its proper divisors (1049771630).

2099543254 is a wasteful number, since it uses less digits than its factorization.

2099543254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049771629.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 2099543254 is about 45820.7731711284. The cubic root of 2099543254 is about 1280.4863170794.

The spelling of 2099543254 in words is "two billion, ninety-nine million, five hundred forty-three thousand, two hundred fifty-four".