2640329139 has 16 divisors (see below), whose sum is σ = 4132099328. Its totient is φ = 1467981792.

The previous prime is 2640329113. The next prime is 2640329147. The reversal of 2640329139 is 9319230462.

2640329139 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2640329139 - 2¹¹ = 2640327091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2640329097 and 2640329106.

It is not an unprimeable number, because it can be changed into a prime (2640321139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698277 + ... + 1699830.

It is an arithmetic number, because the mean of its divisors is an integer number (258256208).

Almost surely, 2^2640329139 is an apocalyptic number.

2640329139 is a deficient number, since it is larger than the sum of its proper divisors (1491770189).

2640329139 is a wasteful number, since it uses less digits than its factorization.

2640329139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398154.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 2640329139 is about 51384.1331443861. The cubic root of 2640329139 is about 1382.1420802264.

The spelling of 2640329139 in words is "two billion, six hundred forty million, three hundred twenty-nine thousand, one hundred thirty-nine".