2138279480 has 16 divisors (see below), whose sum is σ = 4811128920. Its totient is φ = 855311776.

The previous prime is 2138279459. The next prime is 2138279501. The reversal of 2138279480 is 849728312.

It is an interprime number because it is at equal distance from previous prime (2138279459) and next prime (2138279501).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26728454 + ... + 26728533.

Almost surely, 2^2138279480 is an apocalyptic number.

2138279480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2138279480 is an abundant number, since it is smaller than the sum of its proper divisors (2672849440).

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

2138279480 is a wasteful number, since it uses less digits than its factorization.

2138279480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53456998 (or 53456994 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 2138279480 is about 46241.5341441004. The cubic root of 2138279480 is about 1288.3132974344.

The spelling of 2138279480 in words is "two billion, one hundred thirty-eight million, two hundred seventy-nine thousand, four hundred eighty".