2539067805 has 24 divisors (see below), whose sum is σ = 4406437152. Its totient is φ = 1352512224.

The previous prime is 2539067801. The next prime is 2539067813. The reversal of 2539067805 is 5087609352.

It is a happy number.

It is not a de Polignac number, because 2539067805 - 2² = 2539067801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539067801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3102 + ... + 71328.

It is an arithmetic number, because the mean of its divisors is an integer number (183601548).

Almost surely, 2^2539067805 is an apocalyptic number.

It is an amenable number.

2539067805 is a deficient number, since it is larger than the sum of its proper divisors (1867369347).

2539067805 is a wasteful number, since it uses less digits than its factorization.

2539067805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69065 (or 69062 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 2539067805 is about 50389.1635671798. The cubic root of 2539067805 is about 1364.2420539532.

The spelling of 2539067805 in words is "two billion, five hundred thirty-nine million, sixty-seven thousand, eight hundred five".