19946737029 has 32 divisors (see below), whose sum is σ = 27466777728. Its totient is φ = 12870144000.

The previous prime is 19946736923. The next prime is 19946737043. The reversal of 19946737029 is 92073764991.

It is a de Polignac number, because none of the positive numbers 2^k-19946737029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19946737029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19946730029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6557749 + ... + 6560789.

It is an arithmetic number, because the mean of its divisors is an integer number (858336804).

Almost surely, 2^19946737029 is an apocalyptic number.

It is an amenable number.

19946737029 is a deficient number, since it is larger than the sum of its proper divisors (7520040699).

19946737029 is a wasteful number, since it uses less digits than its factorization.

19946737029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669.

The product of its (nonzero) digits is 5143824, while the sum is 57.

The spelling of 19946737029 in words is "nineteen billion, nine hundred forty-six million, seven hundred thirty-seven thousand, twenty-nine".