2540734569 has 6 divisors (see below), whose sum is σ = 3669949946. Its totient is φ = 1693823040.

The previous prime is 2540734529. The next prime is 2540734577. The reversal of 2540734569 is 9654370452.

2540734569 is a `hidden beast` number, since 2 + 54 + 0 + 7 + 34 + 569 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2210222169 + 330512400 = 47013^2 + 18180^2 .

It is not a de Polignac number, because 2540734569 - 2⁹ = 2540734057 is a prime.

It is a super-2 number, since 2×2540734569² = 12910664300223231522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2540734529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141151912 + ... + 141151929.

Almost surely, 2^2540734569 is an apocalyptic number.

It is an amenable number.

2540734569 is a deficient number, since it is larger than the sum of its proper divisors (1129215377).

2540734569 is a wasteful number, since it uses less digits than its factorization.

2540734569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282303847 (or 282303844 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 2540734569 is about 50405.6997669906. The cubic root of 2540734569 is about 1364.5405062909.

The spelling of 2540734569 in words is "two billion, five hundred forty million, seven hundred thirty-four thousand, five hundred sixty-nine".