19931361884946 has 12 divisors (see below), whose sum is σ = 43184617417422. Its totient is φ = 6643787294976.

The previous prime is 19931361884893. The next prime is 19931361884957. The reversal of 19931361884946 is 64948816313991.

It is a happy number.

19931361884946 is a `hidden beast` number, since 1 + 9 + 93 + 1 + 36 + 18 + 8 + 494 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19853039705625 + 78322179321 = 4455675^2 + 279861^2 .

It is a super-2 number, since 2×19931361884946² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553648941231 + ... + 553648941266.

Almost surely, 2^{19931361884946} is an apocalyptic number.

19931361884946 is an abundant number, since it is smaller than the sum of its proper divisors (23253255532476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19931361884946 is a wasteful number, since it uses less digits than its factorization.

19931361884946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107297882505 (or 1107297882502 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 72.

The spelling of 19931361884946 in words is "nineteen trillion, nine hundred thirty-one billion, three hundred sixty-one million, eight hundred eighty-four thousand, nine hundred forty-six".