19706307945 has 32 divisors (see below), whose sum is σ = 33597514368. Its totient is φ = 9828768768.

The previous prime is 19706307923. The next prime is 19706307947. The reversal of 19706307945 is 54970360791.

It is not a de Polignac number, because 19706307945 - 2⁵ = 19706307913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (19706307947) 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 31 ways as a sum of consecutive naturals, for example, 206079 + ... + 286148.

It is an arithmetic number, because the mean of its divisors is an integer number (1049922324).

Almost surely, 2^19706307945 is an apocalyptic number.

19706307945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19706307945 is a deficient number, since it is larger than the sum of its proper divisors (13891206423).

19706307945 is a wasteful number, since it uses less digits than its factorization.

19706307945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492409.

The product of its (nonzero) digits is 1428840, while the sum is 51.

The spelling of 19706307945 in words is "nineteen billion, seven hundred six million, three hundred seven thousand, nine hundred forty-five".