6634357494 has 16 divisors (see below), whose sum is σ = 13428580032. Its totient is φ = 2184808328.

The previous prime is 6634357493. The next prime is 6634357501. The reversal of 6634357494 is 4947534366.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6634357493) 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, 6660504 + ... + 6661499.

It is an arithmetic number, because the mean of its divisors is an integer number (839286252).

Almost surely, 2^6634357494 is an apocalyptic number.

6634357494 is an abundant number, since it is smaller than the sum of its proper divisors (6794222538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6634357494 is a wasteful number, since it uses less digits than its factorization.

6634357494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13322091.

The product of its digits is 6531840, while the sum is 51.

The square root of 6634357494 is about 81451.5653256584. The cubic root of 6634357494 is about 1879.0267232848.

The spelling of 6634357494 in words is "six billion, six hundred thirty-four million, three hundred fifty-seven thousand, four hundred ninety-four".