19083890139 has 4 divisors (see below), whose sum is σ = 25445186856. Its totient is φ = 12722593424.

The previous prime is 19083890123. The next prime is 19083890143. The reversal of 19083890139 is 93109838091.

It is a happy number.

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 19083890139 - 2⁴ = 19083890123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19083890091 and 19083890100.

It is not an unprimeable number, because it can be changed into a prime (19083890159) 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, 3180648354 + ... + 3180648359.

It is an arithmetic number, because the mean of its divisors is an integer number (6361296714).

Almost surely, 2^19083890139 is an apocalyptic number.

19083890139 is a deficient number, since it is larger than the sum of its proper divisors (6361296717).

19083890139 is an equidigital number, since it uses as much as digits as its factorization.

19083890139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361296716.

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 19083890139 in words is "nineteen billion, eighty-three million, eight hundred ninety thousand, one hundred thirty-nine".