19974104929 has 2 divisors, whose sum is σ = 19974104930. Its totient is φ = 19974104928.

The previous prime is 19974104869. The next prime is 19974104963. The reversal of 19974104929 is 92940147991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14507720704 + 5466384225 = 120448^2 + 73935^2 .

It is a cyclic number.

It is not a de Polignac number, because 19974104929 - 2¹⁷ = 19973973857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19974104929.

It is not a weakly prime, because it can be changed into another prime (19974107929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9987052464 + 9987052465.

It is an arithmetic number, because the mean of its divisors is an integer number (9987052465).

Almost surely, 2^19974104929 is an apocalyptic number.

It is an amenable number.

19974104929 is a deficient number, since it is larger than the sum of its proper divisors (1).

19974104929 is an equidigital number, since it uses as much as digits as its factorization.

19974104929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 19974104929 in words is "nineteen billion, nine hundred seventy-four million, one hundred four thousand, nine hundred twenty-nine".