1138025563 has 4 divisors (see below), whose sum is σ = 1138275520. Its totient is φ = 1137775608.

The previous prime is 1138025557. The next prime is 1138025587. The reversal of 1138025563 is 3655208311.

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-1138025563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138025503) 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, 118020 + ... + 127297.

It is an arithmetic number, because the mean of its divisors is an integer number (284568880).

Almost surely, 2^1138025563 is an apocalyptic number.

1138025563 is a deficient number, since it is larger than the sum of its proper divisors (249957).

1138025563 is an equidigital number, since it uses as much as digits as its factorization.

1138025563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249956.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1138025563 is about 33734.6344726010. The cubic root of 1138025563 is about 1044.0404836819.

The spelling of 1138025563 in words is "one billion, one hundred thirty-eight million, twenty-five thousand, five hundred sixty-three".