4649210978 has 8 divisors (see below), whose sum is σ = 6974660460. Its totient is φ = 2324324160.

The previous prime is 4649210971. The next prime is 4649210981. The reversal of 4649210978 is 8790129464.

It can be written as a sum of positive squares in 2 ways, for example, as 4563407809 + 85803169 = 67553^2 + 9263^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4649210971) 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, 119363 + ... + 153446.

Almost surely, 2^4649210978 is an apocalyptic number.

4649210978 is a deficient number, since it is larger than the sum of its proper divisors (2325449482).

4649210978 is a wasteful number, since it uses less digits than its factorization.

4649210978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281332.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 4649210978 is about 68185.1228494897. The cubic root of 4649210978 is about 1669.0131234053.

The spelling of 4649210978 in words is "four billion, six hundred forty-nine million, two hundred ten thousand, nine hundred seventy-eight".