1263420830 has 16 divisors (see below), whose sum is σ = 2599037280. Its totient is φ = 433172832.

The previous prime is 1263420787. The next prime is 1263420857. The reversal of 1263420830 is 380243621.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1263420793 and 1263420802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9024365 + ... + 9024504.

It is an arithmetic number, because the mean of its divisors is an integer number (162439830).

Almost surely, 2^1263420830 is an apocalyptic number.

1263420830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263420830 is an abundant number, since it is smaller than the sum of its proper divisors (1335616450).

1263420830 is a wasteful number, since it uses less digits than its factorization.

1263420830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18048883.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1263420830 is about 35544.6315215111. The cubic root of 1263420830 is about 1081.0588694873.

The spelling of 1263420830 in words is "one billion, two hundred sixty-three million, four hundred twenty thousand, eight hundred thirty".