1289192346940 has 48 divisors (see below), whose sum is σ = 2748233980800. Its totient is φ = 507883666752.

The previous prime is 1289192346917. The next prime is 1289192346943. The reversal of 1289192346940 is 496432919821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289192346943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7172691 + ... + 7350229.

It is an arithmetic number, because the mean of its divisors is an integer number (57254874600).

Almost surely, 2^{1289192346940} is an apocalyptic number.

1289192346940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1289192346940 is an abundant number, since it is smaller than the sum of its proper divisors (1459041633860).

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

1289192346940 is a wasteful number, since it uses less digits than its factorization.

1289192346940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183034 (or 183032 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 1289192346940 in words is "one trillion, two hundred eighty-nine billion, one hundred ninety-two million, three hundred forty-six thousand, nine hundred forty".