2478847091 has 16 divisors (see below), whose sum is σ = 2849088000. Its totient is φ = 2112671808.

The previous prime is 2478847081. The next prime is 2478847099. The reversal of 2478847091 is 1907488742.

It is a cyclic number.

It is not a de Polignac number, because 2478847091 - 2²⁶ = 2411738227 is a prime.

It is a super-2 number, since 2×2478847091² = 12289365801118324562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478847099) 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, 1185575 + ... + 1187663.

It is an arithmetic number, because the mean of its divisors is an integer number (178068000).

Almost surely, 2^2478847091 is an apocalyptic number.

2478847091 is a deficient number, since it is larger than the sum of its proper divisors (370240909).

2478847091 is a wasteful number, since it uses less digits than its factorization.

2478847091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 2478847091 is about 49788.0215614158. The cubic root of 2478847091 is about 1353.3701059691.

The spelling of 2478847091 in words is "two billion, four hundred seventy-eight million, eight hundred forty-seven thousand, ninety-one".