7489671961 has 4 divisors (see below), whose sum is σ = 7566885172. Its totient is φ = 7412458752.

The previous prime is 7489671949. The next prime is 7489671977. The reversal of 7489671961 is 1691769847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1905846336 + 5583825625 = 43656^2 + 74725^2 .

It is a cyclic number.

It is not a de Polignac number, because 7489671961 - 2¹⁵ = 7489639193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7489671896 and 7489671905.

It is not an unprimeable number, because it can be changed into a prime (7489671061) 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 3 ways as a sum of consecutive naturals, for example, 38606460 + ... + 38606653.

It is an arithmetic number, because the mean of its divisors is an integer number (1891721293).

Almost surely, 2^7489671961 is an apocalyptic number.

It is an amenable number.

7489671961 is a deficient number, since it is larger than the sum of its proper divisors (77213211).

7489671961 is an equidigital number, since it uses as much as digits as its factorization.

7489671961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77213210.

The product of its digits is 4572288, while the sum is 58.

The square root of 7489671961 is about 86542.8908749875. The cubic root of 7489671961 is about 1956.5348988164.

The spelling of 7489671961 in words is "seven billion, four hundred eighty-nine million, six hundred seventy-one thousand, nine hundred sixty-one".