1263777948 has 36 divisors (see below), whose sum is σ = 3212412840. Its totient is φ = 418903776.

The previous prime is 1263777859. The next prime is 1263777997. The reversal of 1263777948 is 8497773621.

1263777948 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1263777894 and 1263777903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91615 + ... + 104502.

It is an arithmetic number, because the mean of its divisors is an integer number (89233690).

Almost surely, 2^1263777948 is an apocalyptic number.

1263777948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1263777948 is an abundant number, since it is smaller than the sum of its proper divisors (1948634892).

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

1263777948 is a wasteful number, since it uses less digits than its factorization.

1263777948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196306 (or 196301 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 1263777948 is about 35549.6546818672. The cubic root of 1263777948 is about 1081.1607171068.

The spelling of 1263777948 in words is "one billion, two hundred sixty-three million, seven hundred seventy-seven thousand, nine hundred forty-eight".