19914152329 has 4 divisors (see below), whose sum is σ = 19927545984. Its totient is φ = 19900758676.

The previous prime is 19914152327. The next prime is 19914152333. The reversal of 19914152329 is 92325141991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92325141991 = 3469 ⋅26614339.

It is a cyclic number.

It is not a de Polignac number, because 19914152329 - 2¹ = 19914152327 is a prime.

It is a super-2 number, since 2×19914152329² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19914152327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6694597 + ... + 6697570.

It is an arithmetic number, because the mean of its divisors is an integer number (4981886496).

Almost surely, 2^19914152329 is an apocalyptic number.

It is an amenable number.

19914152329 is a deficient number, since it is larger than the sum of its proper divisors (13393655).

19914152329 is a wasteful number, since it uses less digits than its factorization.

19914152329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13393654.

The product of its digits is 174960, while the sum is 46.

It can be divided in two parts, 1991415 and 2329, that added together give a square (1993744 = 1412²).

The spelling of 19914152329 in words is "nineteen billion, nine hundred fourteen million, one hundred fifty-two thousand, three hundred twenty-nine".