1263564532 has 12 divisors (see below), whose sum is σ = 2248716960. Its totient is φ = 621073976.

The previous prime is 1263564517. The next prime is 1263564569. The reversal of 1263564532 is 2354653621.

It is a junction number, because it is equal to n+sod(n) for n = 1263564491 and 1263564500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2676808 + ... + 2677279.

It is an arithmetic number, because the mean of its divisors is an integer number (187393080).

Almost surely, 2^1263564532 is an apocalyptic number.

It is an amenable number.

1263564532 is a deficient number, since it is larger than the sum of its proper divisors (985152428).

1263564532 is a wasteful number, since it uses less digits than its factorization.

1263564532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354150 (or 5354148 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 1263564532 is about 35546.6528944710. The cubic root of 1263564532 is about 1081.0998546255.

The spelling of 1263564532 in words is "one billion, two hundred sixty-three million, five hundred sixty-four thousand, five hundred thirty-two".