7538745545 has 8 divisors (see below), whose sum is σ = 9136064520. Its totient is φ = 5971283200.

The previous prime is 7538745541. The next prime is 7538745569. The reversal of 7538745545 is 5455478357.

It can be written as a sum of positive squares in 4 ways, for example, as 3440057104 + 4098688441 = 58652^2 + 64021^2 .

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

It is not a de Polignac number, because 7538745545 - 2² = 7538745541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7538745541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7463600 + ... + 7464609.

It is an arithmetic number, because the mean of its divisors is an integer number (1142008065).

Almost surely, 2^7538745545 is an apocalyptic number.

It is an amenable number.

7538745545 is a deficient number, since it is larger than the sum of its proper divisors (1597318975).

7538745545 is a wasteful number, since it uses less digits than its factorization.

7538745545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14928315.

The product of its digits is 11760000, while the sum is 53.

The square root of 7538745545 is about 86825.9497212671. The cubic root of 7538745545 is about 1960.7987811284.

The spelling of 7538745545 in words is "seven billion, five hundred thirty-eight million, seven hundred forty-five thousand, five hundred forty-five".