7432681369 has 9 divisors (see below), whose sum is σ = 7542280029. Its totient is φ = 7324656480.

The previous prime is 7432681349. The next prime is 7432681391. The reversal of 7432681369 is 9631862347.

The square root of 7432681369 is 86213.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2105433225 + 5327248144 = 45885^2 + 72988^2 .

It is not a de Polignac number, because 7432681369 - 2⁵ = 7432681337 is a prime.

It is a super-2 number, since 2×7432681369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7432681339) 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 8 ways as a sum of consecutive naturals, for example, 6292959 + ... + 6294139.

Almost surely, 2^7432681369 is an apocalyptic number.

7432681369 is the 86213-rd square number.

7432681369 is the 43107-th centered octagonal number.

It is an amenable number.

7432681369 is a deficient number, since it is larger than the sum of its proper divisors (109598660).

7432681369 is an frugal number, since it uses more digits than its factorization.

7432681369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508 (or 1254 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The cubic root of 7432681369 is about 1951.5596874294.

Multiplying 7432681369 by its sum of digits (49), we get a square (364201387081 = 603491²).

The spelling of 7432681369 in words is "seven billion, four hundred thirty-two million, six hundred eighty-one thousand, three hundred sixty-nine".