19388880141 has 4 divisors (see below), whose sum is σ = 25851840192. Its totient is φ = 12925920092.

The previous prime is 19388880139. The next prime is 19388880143. The reversal of 19388880141 is 14108888391.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (19388880139) and next prime (19388880143).

It is a cyclic number.

It is not a de Polignac number, because 19388880141 - 2¹ = 19388880139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19388880143) 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, 3231480021 + ... + 3231480026.

It is an arithmetic number, because the mean of its divisors is an integer number (6462960048).

Almost surely, 2^19388880141 is an apocalyptic number.

It is an amenable number.

19388880141 is a deficient number, since it is larger than the sum of its proper divisors (6462960051).

19388880141 is an equidigital number, since it uses as much as digits as its factorization.

19388880141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6462960050.

The product of its (nonzero) digits is 442368, while the sum is 51.

The spelling of 19388880141 in words is "nineteen billion, three hundred eighty-eight million, eight hundred eighty thousand, one hundred forty-one".