1263672192 has 64 divisors (see below), whose sum is σ = 3361654800. Its totient is φ = 420593664.

The previous prime is 1263672191. The next prime is 1263672199. The reversal of 1263672192 is 2912763621.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1263672192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263672191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303984 + ... + 308112.

Almost surely, 2^1263672192 is an apocalyptic number.

1263672192 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 1263672192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680827400).

1263672192 is an abundant number, since it is smaller than the sum of its proper divisors (2097982608).

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

1263672192 is an equidigital number, since it uses as much as digits as its factorization.

1263672192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943 (or 4931 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 1263672192 is about 35548.1672101390. The cubic root of 1263672192 is about 1081.1305582163.

The spelling of 1263672192 in words is "one billion, two hundred sixty-three million, six hundred seventy-two thousand, one hundred ninety-two".