19013129 has 4 divisors (see below), whose sum is σ = 20013840. Its totient is φ = 18012420.

The previous prime is 19013119. The next prime is 19013131. The reversal of 19013129 is 92131091.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19013129 is a prime.

It is a super-2 number, since 2×19013129² = 722998148741282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19013098 and 19013107.

It is not an unprimeable number, because it can be changed into a prime (19013119) 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, 500327 + ... + 500364.

It is an arithmetic number, because the mean of its divisors is an integer number (5003460).

Almost surely, 2^19013129 is an apocalyptic number.

19013129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19013129 is a deficient number, since it is larger than the sum of its proper divisors (1000711).

19013129 is a wasteful number, since it uses less digits than its factorization.

19013129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000710.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 19013129 is about 4360.4046830541. The cubic root of 19013129 is about 266.9016129055.

The spelling of 19013129 in words is "nineteen million, thirteen thousand, one hundred twenty-nine".