19051429919 has 4 divisors (see below), whose sum is σ = 19240058040. Its totient is φ = 18862801800.

The previous prime is 19051429877. The next prime is 19051429997. The reversal of 19051429919 is 91992415091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19051429919 is a prime.

It is a super-2 number, since 2×19051429919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19051420919) 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, 94313909 + ... + 94314110.

It is an arithmetic number, because the mean of its divisors is an integer number (4810014510).

Almost surely, 2^19051429919 is an apocalyptic number.

19051429919 is a deficient number, since it is larger than the sum of its proper divisors (188628121).

19051429919 is a wasteful number, since it uses less digits than its factorization.

19051429919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188628120.

The product of its (nonzero) digits is 262440, while the sum is 50.

The spelling of 19051429919 in words is "nineteen billion, fifty-one million, four hundred twenty-nine thousand, nine hundred nineteen".