2563746023 has 4 divisors (see below), whose sum is σ = 2564791080. Its totient is φ = 2562700968.

The previous prime is 2563746011. The next prime is 2563746041. The reversal of 2563746023 is 3206473652.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563746023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563746923) 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, 518840 + ... + 523757.

It is an arithmetic number, because the mean of its divisors is an integer number (641197770).

Almost surely, 2^2563746023 is an apocalyptic number.

2563746023 is a deficient number, since it is larger than the sum of its proper divisors (1045057).

2563746023 is a wasteful number, since it uses less digits than its factorization.

2563746023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045056.

The product of its (nonzero) digits is 181440, while the sum is 38.

The square root of 2563746023 is about 50633.4476704875. The cubic root of 2563746023 is about 1368.6476831061.

The spelling of 2563746023 in words is "two billion, five hundred sixty-three million, seven hundred forty-six thousand, twenty-three".