19358249161 has 16 divisors (see below), whose sum is σ = 21270435840. Its totient is φ = 17535949200.

The previous prime is 19358249149. The next prime is 19358249203. The reversal of 19358249161 is 16194285391.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19358249161 - 2¹⁷ = 19358118089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19358249101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677136 + ... + 1688638.

It is an arithmetic number, because the mean of its divisors is an integer number (1329402240).

Almost surely, 2^19358249161 is an apocalyptic number.

It is an amenable number.

19358249161 is a deficient number, since it is larger than the sum of its proper divisors (1912186679).

19358249161 is a wasteful number, since it uses less digits than its factorization.

19358249161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15396.

The product of its digits is 466560, while the sum is 49.

The spelling of 19358249161 in words is "nineteen billion, three hundred fifty-eight million, two hundred forty-nine thousand, one hundred sixty-one".