1291193598248 has 32 divisors (see below), whose sum is σ = 2461209038760. Its totient is φ = 634875770880.

The previous prime is 1291193598229. The next prime is 1291193598263. The reversal of 1291193598248 is 8428953911921.

It is a Cunningham number, because it is equal to 1136307²-1.

It can be written as a sum of positive squares in 4 ways, for example, as 829013892004 + 462179706244 = 910502^2 + 679838^2 .

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, 1988540 + ... + 2556692.

Almost surely, 2^{1291193598248} is an apocalyptic number.

It is an amenable number.

1291193598248 is a deficient number, since it is larger than the sum of its proper divisors (1170015440512).

1291193598248 is a wasteful number, since it uses less digits than its factorization.

1291193598248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572877 (or 572873 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 62.

The spelling of 1291193598248 in words is "one trillion, two hundred ninety-one billion, one hundred ninety-three million, five hundred ninety-eight thousand, two hundred forty-eight".