19640937003 has 16 divisors (see below), whose sum is σ = 27082177536. Its totient is φ = 12648373920.

The previous prime is 19640936989. The next prime is 19640937037. The reversal of 19640937003 is 30073904691.

It is not a de Polignac number, because 19640937003 - 2¹⁷ = 19640805931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19640937053) 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, 142176 + ... + 243917.

It is an arithmetic number, because the mean of its divisors is an integer number (1692636096).

Almost surely, 2^19640937003 is an apocalyptic number.

19640937003 is a deficient number, since it is larger than the sum of its proper divisors (7441240533).

19640937003 is a wasteful number, since it uses less digits than its factorization.

19640937003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386674.

The product of its (nonzero) digits is 122472, while the sum is 42.

The spelling of 19640937003 in words is "nineteen billion, six hundred forty million, nine hundred thirty-seven thousand, three".