2138446916 has 6 divisors (see below), whose sum is σ = 3742282110. Its totient is φ = 1069223456.

The previous prime is 2138446913. The next prime is 2138446969. The reversal of 2138446916 is 6196448312.

It can be written as a sum of positive squares in only one way, i.e., 1890510400 + 247936516 = 43480^2 + 15746^2 .

It is a super-2 number, since 2×2138446916² = 9145910425099822112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2138446913) by changing a digit.

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 as a sum of consecutive naturals, namely, 267305861 + ... + 267305868.

It is an arithmetic number, because the mean of its divisors is an integer number (623713685).

Almost surely, 2^2138446916 is an apocalyptic number.

It is an amenable number.

2138446916 is a deficient number, since it is larger than the sum of its proper divisors (1603835194).

2138446916 is a wasteful number, since it uses less digits than its factorization.

2138446916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534611733 (or 534611731 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 2138446916 is about 46243.3445589741. The cubic root of 2138446916 is about 1288.3469232844.

The spelling of 2138446916 in words is "two billion, one hundred thirty-eight million, four hundred forty-six thousand, nine hundred sixteen".