19740669429 has 16 divisors (see below), whose sum is σ = 28351632512. Its totient is φ = 12145508928.

The previous prime is 19740669427. The next prime is 19740669437. The reversal of 19740669429 is 92496604791.

It is not a de Polignac number, because 19740669429 - 2¹ = 19740669427 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19740669427) 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, 139599 + ... + 242835.

It is an arithmetic number, because the mean of its divisors is an integer number (1771977032).

Almost surely, 2^19740669429 is an apocalyptic number.

It is an amenable number.

19740669429 is a deficient number, since it is larger than the sum of its proper divisors (8610963083).

19740669429 is a wasteful number, since it uses less digits than its factorization.

19740669429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108156.

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 19740669429 in words is "nineteen billion, seven hundred forty million, six hundred sixty-nine thousand, four hundred twenty-nine".