1263875000 has 56 divisors (see below), whose sum is σ = 2962462080. Its totient is φ = 505500000.

The previous prime is 1263874999. The next prime is 1263875009. The reversal of 1263875000 is 5783621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263875009) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 119945 + ... + 130055.

Almost surely, 2^1263875000 is an apocalyptic number.

1263875000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263875000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481231040).

1263875000 is an abundant number, since it is smaller than the sum of its proper divisors (1698587080).

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

1263875000 is an frugal number, since it uses more digits than its factorization.

1263875000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1263875000 is about 35551.0196759530. The cubic root of 1263875000 is about 1081.1883923600.

The spelling of 1263875000 in words is "one billion, two hundred sixty-three million, eight hundred seventy-five thousand".