2563736534 has 4 divisors (see below), whose sum is σ = 3845604804. Its totient is φ = 1281868266.

The previous prime is 2563736533. The next prime is 2563736543. The reversal of 2563736534 is 4356373652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563736531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640934132 + ... + 640934135.

It is an arithmetic number, because the mean of its divisors is an integer number (961401201).

Almost surely, 2^2563736534 is an apocalyptic number.

2563736534 is a deficient number, since it is larger than the sum of its proper divisors (1281868270).

2563736534 is a wasteful number, since it uses less digits than its factorization.

2563736534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281868269.

The product of its digits is 1360800, while the sum is 44.

The square root of 2563736534 is about 50633.3539675183. The cubic root of 2563736534 is about 1368.6459945465.

The spelling of 2563736534 in words is "two billion, five hundred sixty-three million, seven hundred thirty-six thousand, five hundred thirty-four".