1291367882389 has 32 divisors (see below), whose sum is σ = 1413418406400. Its totient is φ = 1172680104960.

The previous prime is 1291367882381. The next prime is 1291367882411. The reversal of 1291367882389 is 9832887631921.

It is not a de Polignac number, because 1291367882389 - 2³ = 1291367882381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291367882381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418052157 + ... + 418055245.

It is an arithmetic number, because the mean of its divisors is an integer number (44169325200).

Almost surely, 2^{1291367882389} is an apocalyptic number.

It is an amenable number.

1291367882389 is a deficient number, since it is larger than the sum of its proper divisors (122050524011).

1291367882389 is a wasteful number, since it uses less digits than its factorization.

1291367882389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525.

The product of its digits is 62705664, while the sum is 67.

The spelling of 1291367882389 in words is "one trillion, two hundred ninety-one billion, three hundred sixty-seven million, eight hundred eighty-two thousand, three hundred eighty-nine".