6540370294 has 4 divisors (see below), whose sum is σ = 9810555444. Its totient is φ = 3270185146.

The previous prime is 6540370217. The next prime is 6540370327. The reversal of 6540370294 is 4920730456.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635092572 + ... + 1635092575.

It is an arithmetic number, because the mean of its divisors is an integer number (2452638861).

Almost surely, 2^6540370294 is an apocalyptic number.

6540370294 is a deficient number, since it is larger than the sum of its proper divisors (3270185150).

6540370294 is a wasteful number, since it uses less digits than its factorization.

6540370294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270185149.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 6540370294 is about 80872.5558765147. Note that the first 3 decimals coincide. The cubic root of 6540370294 is about 1870.1112627899. Note that the first 3 decimals are identical.

The spelling of 6540370294 in words is "six billion, five hundred forty million, three hundred seventy thousand, two hundred ninety-four".