1436121814689 has 27 divisors (see below), whose sum is σ = 2114556804633. Its totient is φ = 939225485952.

The previous prime is 1436121814609. The next prime is 1436121814703. The reversal of 1436121814689 is 9864181216341.

The square root of 1436121814689 is 1198383.

It is a perfect power (a square), and thus also a powerful number.

1436121814689 is a `hidden beast` number, since 1 + 4 + 3 + 612 + 1 + 8 + 14 + 6 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 36017587089 + 1400104227600 = 189783^2 + 1183260^2 .

It is not a de Polignac number, because 1436121814689 - 2²⁹ = 1435584943777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1436121814609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 190539129 + ... + 190546665.

Almost surely, 2^{1436121814689} is an apocalyptic number.

1436121814689 is the 1198383-rd square number.

1436121814689 is the 599192-nd centered octagonal number.

It is an amenable number.

1436121814689 is a deficient number, since it is larger than the sum of its proper divisors (678434989944).

1436121814689 is an frugal number, since it uses more digits than its factorization.

1436121814689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15186 (or 7593 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 1436121814689 in words is "one trillion, four hundred thirty-six billion, one hundred twenty-one million, eight hundred fourteen thousand, six hundred eighty-nine".