7445681249 has 4 divisors (see below), whose sum is σ = 7535388336. Its totient is φ = 7355974164.

The previous prime is 7445681231. The next prime is 7445681251. The reversal of 7445681249 is 9421865447.

7445681249 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9421865447 = 131 ⋅71922637.

It is a cyclic number.

It is not a de Polignac number, because 7445681249 - 2¹⁶ = 7445615713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7445681197 and 7445681206.

It is not an unprimeable number, because it can be changed into a prime (7445681219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44853419 + ... + 44853584.

It is an arithmetic number, because the mean of its divisors is an integer number (1883847084).

Almost surely, 2^7445681249 is an apocalyptic number.

It is an amenable number.

7445681249 is a deficient number, since it is larger than the sum of its proper divisors (89707087).

7445681249 is an equidigital number, since it uses as much as digits as its factorization.

7445681249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89707086.

The product of its digits is 1935360, while the sum is 50.

The square root of 7445681249 is about 86288.3610285883. The cubic root of 7445681249 is about 1952.6967945726.

The spelling of 7445681249 in words is "seven billion, four hundred forty-five million, six hundred eighty-one thousand, two hundred forty-nine".