1263875140 has 48 divisors (see below), whose sum is σ = 2900427264. Its totient is φ = 458796800.

The previous prime is 1263875089. The next prime is 1263875159. The reversal of 1263875140 is 415783621.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1263875140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131085 + ... + 140395.

It is an arithmetic number, because the mean of its divisors is an integer number (60425568).

Almost surely, 2^1263875140 is an apocalyptic number.

1263875140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263875140 is an abundant number, since it is smaller than the sum of its proper divisors (1636552124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263875140 is a wasteful number, since it uses less digits than its factorization.

1263875140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948 (or 9946 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1263875140 is about 35551.0216449542. The cubic root of 1263875140 is about 1081.1884322812.

It can be divided in two parts, 12638 and 75140, that added together give a palindrome (87778).

The spelling of 1263875140 in words is "one billion, two hundred sixty-three million, eight hundred seventy-five thousand, one hundred forty".