1291883080 has 32 divisors (see below), whose sum is σ = 2910900600. Its totient is φ = 516013056.

The previous prime is 1291883053. The next prime is 1291883081. The reversal of 1291883080 is 803881921.

It can be written as a sum of positive squares in 4 ways, for example, as 969824164 + 322058916 = 31142^2 + 17946^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1291883081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5584 + ... + 51136.

Almost surely, 2^1291883080 is an apocalyptic number.

1291883080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1291883080 is an abundant number, since it is smaller than the sum of its proper divisors (1619017520).

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

1291883080 is a wasteful number, since it uses less digits than its factorization.

1291883080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46273 (or 46269 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 1291883080 is about 35942.7750737196. The cubic root of 1291883080 is about 1089.1166650314.

The spelling of 1291883080 in words is "one billion, two hundred ninety-one million, eight hundred eighty-three thousand, eighty".