1263385674 has 24 divisors (see below), whose sum is σ = 2838719520. Its totient is φ = 421128396.

The previous prime is 1263385649. The next prime is 1263385693. The reversal of 1263385674 is 4765833621.

1263385674 is a `hidden beast` number, since 1 + 2 + 633 + 8 + 5 + 6 + 7 + 4 = 666.

1263385674 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1263385674² = 3192286722536868552, which contains 22 as substring.

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, 1299294 + ... + 1300265.

It is an arithmetic number, because the mean of its divisors is an integer number (118279980).

Almost surely, 2^1263385674 is an apocalyptic number.

1263385674 is an abundant number, since it is smaller than the sum of its proper divisors (1575333846).

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

1263385674 is an equidigital number, since it uses as much as digits as its factorization.

1263385674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599576 (or 2599564 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1263385674 is about 35544.1369848812. The cubic root of 1263385674 is about 1081.0488421981.

The spelling of 1263385674 in words is "one billion, two hundred sixty-three million, three hundred eighty-five thousand, six hundred seventy-four".