2478534381 has 12 divisors (see below), whose sum is σ = 3581072352. Its totient is φ = 1651909896.

The previous prime is 2478534361. The next prime is 2478534407. The reversal of 2478534381 is 1834358742.

It is not a de Polignac number, because 2478534381 - 2¹³ = 2478526189 is a prime.

It is a super-2 number, since 2×2478534381² = 12286265355598106322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478534301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81 + ... + 70406.

It is an arithmetic number, because the mean of its divisors is an integer number (298422696).

Almost surely, 2^2478534381 is an apocalyptic number.

It is an amenable number.

2478534381 is a deficient number, since it is larger than the sum of its proper divisors (1102537971).

2478534381 is a wasteful number, since it uses less digits than its factorization.

2478534381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74400 (or 74397 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 2478534381 is about 49784.8810483665. The cubic root of 2478534381 is about 1353.3131937369.

The spelling of 2478534381 in words is "two billion, four hundred seventy-eight million, five hundred thirty-four thousand, three hundred eighty-one".