1261794480 has 80 divisors (see below), whose sum is σ = 3915044064. Its totient is φ = 336179200.

The previous prime is 1261794419. The next prime is 1261794481. The reversal of 1261794480 is 844971621.

1261794480 is digitally balanced in base 6, 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 (80).

It is not an unprimeable number, because it can be changed into a prime (1261794481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449080 + ... + 451880.

Almost surely, 2^1261794480 is an apocalyptic number.

1261794480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1261794480 is an abundant number, since it is smaller than the sum of its proper divisors (2653249584).

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

1261794480 is a wasteful number, since it uses less digits than its factorization.

1261794480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694 (or 4688 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1261794480 is about 35521.7465786805. The cubic root of 1261794480 is about 1080.5948026718.

The spelling of 1261794480 in words is "one billion, two hundred sixty-one million, seven hundred ninety-four thousand, four hundred eighty".