2254638771 has 48 divisors (see below), whose sum is σ = 4170087168. Its totient is φ = 1139572800.

The previous prime is 2254638769. The next prime is 2254638811. The reversal of 2254638771 is 1778364522.

2254638771 is a `hidden beast` number, since 2 + 2 + 5 + 4 + 638 + 7 + 7 + 1 = 666.

It is not a de Polignac number, because 2254638771 - 2¹ = 2254638769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2254638271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18325 + ... + 69606.

It is an arithmetic number, because the mean of its divisors is an integer number (86876816).

Almost surely, 2^2254638771 is an apocalyptic number.

2254638771 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2254638771 is a deficient number, since it is larger than the sum of its proper divisors (1915448397).

2254638771 is a wasteful number, since it uses less digits than its factorization.

2254638771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87992 (or 87989 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 2254638771 is about 47483.0366657399. The cubic root of 2254638771 is about 1311.2705988913.

The spelling of 2254638771 in words is "two billion, two hundred fifty-four million, six hundred thirty-eight thousand, seven hundred seventy-one".