4650393978 has 16 divisors (see below), whose sum is σ = 10334208960. Its totient is φ = 1550131308.

The previous prime is 4650393953. The next prime is 4650394031. The reversal of 4650393978 is 8793930564.

4650393978 is a `hidden beast` number, since 46 + 503 + 9 + 3 + 97 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 86118407 = 4650393978 / (4 + 6 + 5 + 0 + 3 + 9 + 3 + 9 + 7 + 8).

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 7 ways as a sum of consecutive naturals, for example, 43059150 + ... + 43059257.

It is an arithmetic number, because the mean of its divisors is an integer number (645888060).

Almost surely, 2^4650393978 is an apocalyptic number.

4650393978 is an abundant number, since it is smaller than the sum of its proper divisors (5683814982).

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

4650393978 is a wasteful number, since it uses less digits than its factorization.

4650393978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86118418 (or 86118412 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The square root of 4650393978 is about 68193.7972105968. The cubic root of 4650393978 is about 1669.1546725191.

The spelling of 4650393978 in words is "four billion, six hundred fifty million, three hundred ninety-three thousand, nine hundred seventy-eight".