4640138193604 has 27 divisors (see below), whose sum is σ = 8164426632271. Its totient is φ = 2307512859560.

The previous prime is 4640138193601. The next prime is 4640138193623. The reversal of 4640138193604 is 4063918310464.

The square root of 4640138193604 is 2154098.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640138193601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 822862617 + ... + 822868255.

Almost surely, 2^{4640138193604} is an apocalyptic number.

4640138193604 is the 2154098-th square number.

It is an amenable number.

4640138193604 is a deficient number, since it is larger than the sum of its proper divisors (3524288438667).

4640138193604 is an frugal number, since it uses more digits than its factorization.

4640138193604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664 (or 5832 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

Multiplying 4640138193604 by its sum of digits (49), we get a square (227366771486596 = 15078686²).

The spelling of 4640138193604 in words is "four trillion, six hundred forty billion, one hundred thirty-eight million, one hundred ninety-three thousand, six hundred four".