2549905693 has 4 divisors (see below), whose sum is σ = 2550644640. Its totient is φ = 2549166748.

The previous prime is 2549905679. The next prime is 2549905753. The reversal of 2549905693 is 3965099452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2549905693 - 2⁹ = 2549905181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2549905693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2549905493) 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, 364273 + ... + 371206.

It is an arithmetic number, because the mean of its divisors is an integer number (637661160).

Almost surely, 2^2549905693 is an apocalyptic number.

It is an amenable number.

2549905693 is a deficient number, since it is larger than the sum of its proper divisors (738947).

2549905693 is an equidigital number, since it uses as much as digits as its factorization.

2549905693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738946.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The square root of 2549905693 is about 50496.5909047334. The cubic root of 2549905693 is about 1366.1803657533.

The spelling of 2549905693 in words is "two billion, five hundred forty-nine million, nine hundred five thousand, six hundred ninety-three".