7489671905 has 8 divisors (see below), whose sum is σ = 9230514792. Its totient is φ = 5829798528.

The previous prime is 7489671877. The next prime is 7489671919. The reversal of 7489671905 is 5091769847.

It can be written as a sum of positive squares in 4 ways, for example, as 3493282816 + 3996389089 = 59104^2 + 63217^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7489671905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20242172 + ... + 20242541.

It is an arithmetic number, because the mean of its divisors is an integer number (1153814349).

Almost surely, 2^7489671905 is an apocalyptic number.

It is an amenable number.

7489671905 is a deficient number, since it is larger than the sum of its proper divisors (1740842887).

7489671905 is a wasteful number, since it uses less digits than its factorization.

7489671905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40484755.

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 7489671905 is about 86542.8905514485. The cubic root of 7489671905 is about 1956.5348939401.

The spelling of 7489671905 in words is "seven billion, four hundred eighty-nine million, six hundred seventy-one thousand, nine hundred five".