1291416260 has 12 divisors (see below), whose sum is σ = 2711974188. Its totient is φ = 516566496.

The previous prime is 1291416233. The next prime is 1291416281. The reversal of 1291416260 is 626141921.

It can be written as a sum of positive squares in 2 ways, for example, as 460016704 + 831399556 = 21448^2 + 28834^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32285387 + ... + 32285426.

It is an arithmetic number, because the mean of its divisors is an integer number (225997849).

Almost surely, 2^1291416260 is an apocalyptic number.

1291416260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1291416260 is an abundant number, since it is smaller than the sum of its proper divisors (1420557928).

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

1291416260 is a wasteful number, since it uses less digits than its factorization.

1291416260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64570822 (or 64570820 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1291416260 is about 35936.2805532236. The cubic root of 1291416260 is about 1088.9854656732.

The spelling of 1291416260 in words is "one billion, two hundred ninety-one million, four hundred sixteen thousand, two hundred sixty".