4978450509 has 16 divisors (see below), whose sum is σ = 7040647680. Its totient is φ = 3120277680.

The previous prime is 4978450481. The next prime is 4978450541. The reversal of 4978450509 is 9050548794.

It is not a de Polignac number, because 4978450509 - 2⁹ = 4978449997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978450409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325897 + ... + 340830.

It is an arithmetic number, because the mean of its divisors is an integer number (440040480).

Almost surely, 2^4978450509 is an apocalyptic number.

It is an amenable number.

4978450509 is a deficient number, since it is larger than the sum of its proper divisors (2062197171).

4978450509 is a wasteful number, since it uses less digits than its factorization.

4978450509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666880.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 4978450509 is about 70558.1356683976. The cubic root of 4978450509 is about 1707.5158015411.

The spelling of 4978450509 in words is "four billion, nine hundred seventy-eight million, four hundred fifty thousand, five hundred nine".