2054180138 has 4 divisors (see below), whose sum is σ = 3081270210. Its totient is φ = 1027090068.

The previous prime is 2054180131. The next prime is 2054180153. The reversal of 2054180138 is 8310814502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1456719889 + 597460249 = 38167^2 + 24443^2 .

It is not an unprimeable number, because it can be changed into a prime (2054180131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513545033 + ... + 513545036.

Almost surely, 2^2054180138 is an apocalyptic number.

2054180138 is a deficient number, since it is larger than the sum of its proper divisors (1027090072).

2054180138 is a wasteful number, since it uses less digits than its factorization.

2054180138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027090071.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 2054180138 is about 45323.0640844151. The cubic root of 2054180138 is about 1271.1969491282.

The spelling of 2054180138 in words is "two billion, fifty-four million, one hundred eighty thousand, one hundred thirty-eight".