19214157 has 4 divisors (see below), whose sum is σ = 25618880. Its totient is φ = 12809436.

The previous prime is 19214147. The next prime is 19214159. The reversal of 19214157 is 75141291.

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.

It is not a de Polignac number, because 19214157 - 2⁶ = 19214093 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 (19214159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202357 + ... + 3202362.

It is an arithmetic number, because the mean of its divisors is an integer number (6404720).

Almost surely, 2^19214157 is an apocalyptic number.

It is an amenable number.

19214157 is a deficient number, since it is larger than the sum of its proper divisors (6404723).

19214157 is an equidigital number, since it uses as much as digits as its factorization.

19214157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404722.

The product of its digits is 2520, while the sum is 30.

The square root of 19214157 is about 4383.3956015856. The cubic root of 19214157 is about 267.8389774906.

The spelling of 19214157 in words is "nineteen million, two hundred fourteen thousand, one hundred fifty-seven".