6249213978 has 32 divisors (see below), whose sum is σ = 14286589440. Its totient is φ = 1785155760.

The previous prime is 6249213967. The next prime is 6249214001. The reversal of 6249213978 is 8793129426.

It is a self number, because there is not a number n which added to its sum of digits gives 6249213978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292893 + ... + 313503.

It is an arithmetic number, because the mean of its divisors is an integer number (446455920).

Almost surely, 2^6249213978 is an apocalyptic number.

6249213978 is an abundant number, since it is smaller than the sum of its proper divisors (8037375462).

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

6249213978 is a wasteful number, since it uses less digits than its factorization.

6249213978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27842.

The product of its digits is 1306368, while the sum is 51.

The square root of 6249213978 is about 79051.9701082775. The cubic root of 6249213978 is about 1841.9385266213.

The spelling of 6249213978 in words is "six billion, two hundred forty-nine million, two hundred thirteen thousand, nine hundred seventy-eight".