19319417961 has 16 divisors (see below), whose sum is σ = 26607820800. Its totient is φ = 12455865360.

The previous prime is 19319417959. The next prime is 19319417977. The reversal of 19319417961 is 16971491391.

It is not a de Polignac number, because 19319417961 - 2¹ = 19319417959 is a prime.

It is a super-3 number, since 3×19319417961³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19319417921) 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, 73440 + ... + 209838.

It is an arithmetic number, because the mean of its divisors is an integer number (1662988800).

Almost surely, 2^19319417961 is an apocalyptic number.

It is an amenable number.

19319417961 is a deficient number, since it is larger than the sum of its proper divisors (7288402839).

19319417961 is a wasteful number, since it uses less digits than its factorization.

19319417961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137956.

The product of its digits is 367416, while the sum is 51.

The spelling of 19319417961 in words is "nineteen billion, three hundred nineteen million, four hundred seventeen thousand, nine hundred sixty-one".