19005245131 has 4 divisors (see below), whose sum is σ = 19234224072. Its totient is φ = 18776266192.

The previous prime is 19005245107. The next prime is 19005245167. The reversal of 19005245131 is 13154250091.

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

It is a cyclic number.

It is not a de Polignac number, because 19005245131 - 2⁷ = 19005245003 is a prime.

It is a super-2 number, since 2×19005245131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19005245093 and 19005245102.

It is not an unprimeable number, because it can be changed into a prime (19005240131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114489346 + ... + 114489511.

It is an arithmetic number, because the mean of its divisors is an integer number (4808556018).

Almost surely, 2^19005245131 is an apocalyptic number.

19005245131 is a deficient number, since it is larger than the sum of its proper divisors (228978941).

19005245131 is an equidigital number, since it uses as much as digits as its factorization.

19005245131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228978940.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 19005245131 in words is "nineteen billion, five million, two hundred forty-five thousand, one hundred thirty-one".