1640094706 has 16 divisors (see below), whose sum is σ = 2590853760. Its totient is φ = 776517840.

The previous prime is 1640094697. The next prime is 1640094707. The reversal of 1640094706 is 6074900461.

It is not an unprimeable number, because it can be changed into a prime (1640094707) 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 7 ways as a sum of consecutive naturals, for example, 81415 + ... + 99541.

It is an arithmetic number, because the mean of its divisors is an integer number (161928360).

Almost surely, 2^1640094706 is an apocalyptic number.

1640094706 is a deficient number, since it is larger than the sum of its proper divisors (950759054).

1640094706 is a wasteful number, since it uses less digits than its factorization.

1640094706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20529.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1640094706 is about 40498.0827447424. The cubic root of 1640094706 is about 1179.2964076172.

The spelling of 1640094706 in words is "one billion, six hundred forty million, ninety-four thousand, seven hundred six".