7537558642 has 4 divisors (see below), whose sum is σ = 11306337966. Its totient is φ = 3768779320.

The previous prime is 7537558627. The next prime is 7537558649. The reversal of 7537558642 is 2468557357.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2468557357 = 7 ⋅352651051.

It can be written as a sum of positive squares in only one way, i.e., 7537538761 + 19881 = 86819^2 + 141^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7537558642.

It is not an unprimeable number, because it can be changed into a prime (7537558649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1884389659 + ... + 1884389662.

Almost surely, 2^7537558642 is an apocalyptic number.

7537558642 is a deficient number, since it is larger than the sum of its proper divisors (3768779324).

7537558642 is a wasteful number, since it uses less digits than its factorization.

7537558642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768779323.

The product of its digits is 7056000, while the sum is 52.

The square root of 7537558642 is about 86819.1144967512. The cubic root of 7537558642 is about 1960.6958727560.

The spelling of 7537558642 in words is "seven billion, five hundred thirty-seven million, five hundred fifty-eight thousand, six hundred forty-two".