1263738875 has 16 divisors (see below), whose sum is σ = 1802453952. Its totient is φ = 866563200.

The previous prime is 1263738871. The next prime is 1263738919. The reversal of 1263738875 is 5788373621.

It is a happy number.

It is not a de Polignac number, because 1263738875 - 2² = 1263738871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263738871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721262 + ... + 723011.

It is an arithmetic number, because the mean of its divisors is an integer number (112653372).

Almost surely, 2^1263738875 is an apocalyptic number.

1263738875 is a deficient number, since it is larger than the sum of its proper divisors (538715077).

1263738875 is an equidigital number, since it uses as much as digits as its factorization.

1263738875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444295 (or 1444285 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 1263738875 is about 35549.1051223515. The cubic root of 1263738875 is about 1081.1495746884.

The spelling of 1263738875 in words is "one billion, two hundred sixty-three million, seven hundred thirty-eight thousand, eight hundred seventy-five".