4478380515 has 32 divisors (see below), whose sum is σ = 9098933760. Its totient is φ = 2047259232.

The previous prime is 4478380493. The next prime is 4478380537. The reversal of 4478380515 is 5150838744.

4478380515 is a `hidden beast` number, since 447 + 83 + 80 + 51 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (4478380493) and next prime (4478380537).

It is not a de Polignac number, because 4478380515 - 2⁹ = 4478380003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2368569 + ... + 2370458.

It is an arithmetic number, because the mean of its divisors is an integer number (284341680).

Almost surely, 2^4478380515 is an apocalyptic number.

4478380515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4478380515 is an abundant number, since it is smaller than the sum of its proper divisors (4620553245).

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

4478380515 is a wasteful number, since it uses less digits than its factorization.

4478380515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4739048 (or 4739042 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 4478380515 is about 66920.7031866821. The cubic root of 4478380515 is about 1648.3154543244.

The spelling of 4478380515 in words is "four billion, four hundred seventy-eight million, three hundred eighty thousand, five hundred fifteen".