5405487138 has 24 divisors (see below), whose sum is σ = 11754180828. Its totient is φ = 1795322592.

The previous prime is 5405487107. The next prime is 5405487167. The reversal of 5405487138 is 8317845045.

5405487138 is a `hidden beast` number, since 5 + 4 + 0 + 548 + 71 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4881397689 + 524089449 = 69867^2 + 22893^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5405487093 and 5405487102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537081 + ... + 547052.

Almost surely, 2^5405487138 is an apocalyptic number.

5405487138 is an abundant number, since it is smaller than the sum of its proper divisors (6348693690).

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

5405487138 is a wasteful number, since it uses less digits than its factorization.

5405487138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084418 (or 1084415 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 5405487138 is about 73522.0180490171. The cubic root of 5405487138 is about 1755.0046820924.

It can be divided in two parts, 5405487 and 138, that added together give a square (5405625 = 2325²).

The spelling of 5405487138 in words is "five billion, four hundred five million, four hundred eighty-seven thousand, one hundred thirty-eight".