2140280738 has 6 divisors (see below), whose sum is σ = 3210519249. Its totient is φ = 1070107656.

The previous prime is 2140280731. The next prime is 2140280759. The reversal of 2140280738 is 8370820412.

It can be written as a sum of positive squares in 2 ways, for example, as 2138785009 + 1495729 = 46247^2 + 1223^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32713.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2140280698 and 2140280707.

It is not an unprimeable number, because it can be changed into a prime (2140280731) 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 in 2 ways as a sum of consecutive naturals, for example, 49070 + ... + 81782.

Almost surely, 2^2140280738 is an apocalyptic number.

2140280738 is a deficient number, since it is larger than the sum of its proper divisors (1070238511).

2140280738 is an frugal number, since it uses more digits than its factorization.

2140280738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65428 (or 32715 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2140280738 is about 46263.1682659111. The cubic root of 2140280738 is about 1288.7150913987.

The spelling of 2140280738 in words is "two billion, one hundred forty million, two hundred eighty thousand, seven hundred thirty-eight".