1263498372 has 96 divisors (see below), whose sum is σ = 3413975040. Its totient is φ = 403656480.

The previous prime is 1263498367. The next prime is 1263498373. The reversal of 1263498372 is 2738943621.

1263498372 is a `hidden beast` number, since 1 + 2 + 634 + 9 + 8 + 3 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1263498373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356473 + ... + 359999.

It is an arithmetic number, because the mean of its divisors is an integer number (35562240).

Almost surely, 2^1263498372 is an apocalyptic number.

1263498372 is a gapful number since it is divisible by the number (12) 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 1263498372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706987520).

1263498372 is an abundant number, since it is smaller than the sum of its proper divisors (2150476668).

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

1263498372 is a wasteful number, since it uses less digits than its factorization.

1263498372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3678 (or 3670 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 1263498372 is about 35545.7222742765. The cubic root of 1263498372 is about 1081.0809855682.

The spelling of 1263498372 in words is "one billion, two hundred sixty-three million, four hundred ninety-eight thousand, three hundred seventy-two".