19429157 has 16 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 16950000.

The previous prime is 19429133. The next prime is 19429177. The reversal of 19429157 is 75192491.

It is a cyclic number.

It is not a de Polignac number, because 19429157 - 2⁸ = 19428901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19429157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19429177) 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, 77282 + ... + 77532.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^19429157 is an apocalyptic number.

It is an amenable number.

19429157 is a deficient number, since it is larger than the sum of its proper divisors (2633947).

19429157 is a wasteful number, since it uses less digits than its factorization.

19429157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520.

The product of its digits is 22680, while the sum is 38.

The square root of 19429157 is about 4407.8517443308. The cubic root of 19429157 is about 268.8342838585.

The spelling of 19429157 in words is "nineteen million, four hundred twenty-nine thousand, one hundred fifty-seven".