2991913478 has 8 divisors (see below), whose sum is σ = 4632640320. Its totient is φ = 1447700040.

The previous prime is 2991913471. The next prime is 2991913553. The reversal of 2991913478 is 8743191992.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991913471) 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, 24128273 + ... + 24128396.

It is an arithmetic number, because the mean of its divisors is an integer number (579080040).

Almost surely, 2^2991913478 is an apocalyptic number.

2991913478 is a deficient number, since it is larger than the sum of its proper divisors (1640726842).

2991913478 is a wasteful number, since it uses less digits than its factorization.

2991913478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48256702.

The product of its digits is 979776, while the sum is 53.

The square root of 2991913478 is about 54698.3864295831. The cubic root of 2991913478 is about 1440.9525394586.

The spelling of 2991913478 in words is "two billion, nine hundred ninety-one million, nine hundred thirteen thousand, four hundred seventy-eight".