19071742641 has 8 divisors (see below), whose sum is σ = 29061703104. Its totient is φ = 10898138640.

The previous prime is 19071742639. The next prime is 19071742649. The reversal of 19071742641 is 14624717091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19071742641 - 2¹ = 19071742639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19071742593 and 19071742602.

It is not an unprimeable number, because it can be changed into a prime (19071742649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454089090 + ... + 454089131.

It is an arithmetic number, because the mean of its divisors is an integer number (3632712888).

Almost surely, 2^19071742641 is an apocalyptic number.

It is an amenable number.

19071742641 is a deficient number, since it is larger than the sum of its proper divisors (9989960463).

19071742641 is an equidigital number, since it uses as much as digits as its factorization.

19071742641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908178231.

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 19071742641 in words is "nineteen billion, seventy-one million, seven hundred forty-two thousand, six hundred forty-one".