3415643478 has 72 divisors (see below), whose sum is σ = 8276359728. Its totient is φ = 1050914736.

The previous prime is 3415643477. The next prime is 3415643489. The reversal of 3415643478 is 8743465143.

3415643478 is a `hidden beast` number, since 3 + 41 + 564 + 3 + 47 + 8 = 666.

It is a super-4 number, since 4×3415643478⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3415643477) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 160575 + ... + 180597.

Almost surely, 2^3415643478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3415643478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4138179864).

3415643478 is an abundant number, since it is smaller than the sum of its proper divisors (4860716250).

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

3415643478 is an equidigital number, since it uses as much as digits as its factorization.

3415643478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20062 (or 20041 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 3415643478 is about 58443.5067223041. The cubic root of 3415643478 is about 1505.9972460704.

The spelling of 3415643478 in words is "three billion, four hundred fifteen million, six hundred forty-three thousand, four hundred seventy-eight".