1263253460 has 96 divisors (see below), whose sum is σ = 3137944320. Its totient is φ = 418176000.

The previous prime is 1263253457. The next prime is 1263253471. The reversal of 1263253460 is 643523621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 578651 + ... + 580829.

It is an arithmetic number, because the mean of its divisors is an integer number (32686920).

Almost surely, 2^1263253460 is an apocalyptic number.

1263253460 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 1263253460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568972160).

1263253460 is an abundant number, since it is smaller than the sum of its proper divisors (1874690860).

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

1263253460 is a wasteful number, since it uses less digits than its factorization.

1263253460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337 (or 2335 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 1263253460 is about 35542.2770795570. The cubic root of 1263253460 is about 1081.0111300988.

The spelling of 1263253460 in words is "one billion, two hundred sixty-three million, two hundred fifty-three thousand, four hundred sixty".