1408056138 has 12 divisors (see below), whose sum is σ = 3050788338. Its totient is φ = 469352040.

The previous prime is 1408056131. The next prime is 1408056151. The reversal of 1408056138 is 8316508041.

1408056138 is a `hidden beast` number, since 14 + 0 + 80 + 561 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1209161529 + 198894609 = 34773^2 + 14103^2 .

It is not an unprimeable number, because it can be changed into a prime (1408056131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39112653 + ... + 39112688.

Almost surely, 2^1408056138 is an apocalyptic number.

1408056138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1408056138 is an abundant number, since it is smaller than the sum of its proper divisors (1642732200).

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

1408056138 is a wasteful number, since it uses less digits than its factorization.

1408056138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78225349 (or 78225346 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1408056138 is about 37524.0741124948. The cubic root of 1408056138 is about 1120.8306279812.

The spelling of 1408056138 in words is "one billion, four hundred eight million, fifty-six thousand, one hundred thirty-eight".