7489888645 has 8 divisors (see below), whose sum is σ = 9516564504. Its totient is φ = 5639445504.

The previous prime is 7489888639. The next prime is 7489888657. The reversal of 7489888645 is 5468889847.

It can be written as a sum of positive squares in 4 ways, for example, as 159617956 + 7330270689 = 12634^2 + 85617^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7489888645 - 2²⁹ = 6953017733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44058084 + ... + 44058253.

It is an arithmetic number, because the mean of its divisors is an integer number (1189570563).

Almost surely, 2^7489888645 is an apocalyptic number.

It is an amenable number.

7489888645 is a deficient number, since it is larger than the sum of its proper divisors (2026675859).

7489888645 is a wasteful number, since it uses less digits than its factorization.

7489888645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88116359.

The product of its digits is 123863040, while the sum is 67.

The square root of 7489888645 is about 86544.1427538571. The cubic root of 7489888645 is about 1956.5537668310.

The spelling of 7489888645 in words is "seven billion, four hundred eighty-nine million, eight hundred eighty-eight thousand, six hundred forty-five".