2973478647 has 4 divisors (see below), whose sum is σ = 3964638200. Its totient is φ = 1982319096.

The previous prime is 2973478639. The next prime is 2973478657. The reversal of 2973478647 is 7468743792.

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

It is not a de Polignac number, because 2973478647 - 2³ = 2973478639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2973478657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495579772 + ... + 495579777.

It is an arithmetic number, because the mean of its divisors is an integer number (991159550).

Almost surely, 2^2973478647 is an apocalyptic number.

2973478647 is a deficient number, since it is larger than the sum of its proper divisors (991159553).

2973478647 is an equidigital number, since it uses as much as digits as its factorization.

2973478647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991159552.

The product of its digits is 14224896, while the sum is 57.

The square root of 2973478647 is about 54529.6125696855. The cubic root of 2973478647 is about 1437.9869387736.

The spelling of 2973478647 in words is "two billion, nine hundred seventy-three million, four hundred seventy-eight thousand, six hundred forty-seven".