1263280494 has 32 divisors (see below), whose sum is σ = 2902634496. Its totient is φ = 359045280.

The previous prime is 1263280463. The next prime is 1263280517. The reversal of 1263280494 is 4940823621.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70717 + ... + 86760.

It is an arithmetic number, because the mean of its divisors is an integer number (90707328).

Almost surely, 2^1263280494 is an apocalyptic number.

1263280494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1263280494 is an abundant number, since it is smaller than the sum of its proper divisors (1639354002).

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

1263280494 is a wasteful number, since it uses less digits than its factorization.

1263280494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157680.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 1263280494 is about 35542.6573851759. The cubic root of 1263280494 is about 1081.0188413638.

The spelling of 1263280494 in words is "one billion, two hundred sixty-three million, two hundred eighty thousand, four hundred ninety-four".