4727991545 has 8 divisors (see below), whose sum is σ = 5674121160. Its totient is φ = 3782039040.

The previous prime is 4727991509. The next prime is 4727991551. The reversal of 4727991545 is 5451997274.

It can be written as a sum of positive squares in 4 ways, for example, as 2770548496 + 1957443049 = 52636^2 + 44243^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-4727991545 is a prime.

It is a Curzon 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, 24041 + ... + 100169.

It is an arithmetic number, because the mean of its divisors is an integer number (709265145).

Almost surely, 2^4727991545 is an apocalyptic number.

It is an amenable number.

4727991545 is a deficient number, since it is larger than the sum of its proper divisors (946129615).

4727991545 is a wasteful number, since it uses less digits than its factorization.

4727991545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88555.

The product of its digits is 3175200, while the sum is 53.

The square root of 4727991545 is about 68760.3922690963. The cubic root of 4727991545 is about 1678.3874768553.

The spelling of 4727991545 in words is "four billion, seven hundred twenty-seven million, nine hundred ninety-one thousand, five hundred forty-five".