1479843789689 has 2 divisors, whose sum is σ = 1479843789690. Its totient is φ = 1479843789688.

The previous prime is 1479843789631. The next prime is 1479843789757. The reversal of 1479843789689 is 9869873489741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1474968957289 + 4874832400 = 1214483^2 + 69820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1479843789689 - 2³⁶ = 1411124312953 is a prime.

It is a super-2 number, since 2×1479843789689² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1479843759689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 739921894844 + 739921894845.

It is an arithmetic number, because the mean of its divisors is an integer number (739921894845).

Almost surely, 2^{1479843789689} is an apocalyptic number.

It is an amenable number.

1479843789689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1479843789689 is an equidigital number, since it uses as much as digits as its factorization.

1479843789689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5267275776, while the sum is 83.

The spelling of 1479843789689 in words is "one trillion, four hundred seventy-nine billion, eight hundred forty-three million, seven hundred eighty-nine thousand, six hundred eighty-nine".