2138337428 has 12 divisors (see below), whose sum is σ = 3797943072. Its totient is φ = 1053210840.

The previous prime is 2138337419. The next prime is 2138337431. The reversal of 2138337428 is 8247338312.

It is a super-3 number, since 3×2138337428³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3989168 + ... + 3989703.

It is an arithmetic number, because the mean of its divisors is an integer number (316495256).

Almost surely, 2^2138337428 is an apocalyptic number.

It is an amenable number.

2138337428 is a deficient number, since it is larger than the sum of its proper divisors (1659605644).

2138337428 is a wasteful number, since it uses less digits than its factorization.

2138337428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978942 (or 7978940 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 2138337428 is about 46242.1607194128. The cubic root of 2138337428 is about 1288.3249352185.

The spelling of 2138337428 in words is "two billion, one hundred thirty-eight million, three hundred thirty-seven thousand, four hundred twenty-eight".