2478163817 has 8 divisors (see below), whose sum is σ = 2495640480. Its totient is φ = 2460715200.

The previous prime is 2478163799. The next prime is 2478163871. The reversal of 2478163817 is 7183618742.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2478163817 - 2¹⁴ = 2478147433 is a prime.

It is a super-2 number, since 2×2478163817² = 12282591807776018978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478363817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189434 + ... + 202092.

It is an arithmetic number, because the mean of its divisors is an integer number (311955060).

Almost surely, 2^2478163817 is an apocalyptic number.

It is an amenable number.

2478163817 is a deficient number, since it is larger than the sum of its proper divisors (17476663).

2478163817 is a wasteful number, since it uses less digits than its factorization.

2478163817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14023.

The product of its digits is 451584, while the sum is 47.

The square root of 2478163817 is about 49781.1592572933. The cubic root of 2478163817 is about 1353.2457460618.

The spelling of 2478163817 in words is "two billion, four hundred seventy-eight million, one hundred sixty-three thousand, eight hundred seventeen".