1913688409464 has 72 divisors (see below), whose sum is σ = 5612259313440. Its totient is φ = 588827199168.

The previous prime is 1913688409453. The next prime is 1913688409469. The reversal of 1913688409464 is 4649048863191.

1913688409464 is a `hidden beast` number, since 1 + 91 + 3 + 6 + 8 + 84 + 0 + 9 + 464 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913688409469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 78623944 + ... + 78648279.

It is an arithmetic number, because the mean of its divisors is an integer number (77948046020).

Almost surely, 2^{1913688409464} is an apocalyptic number.

It is an amenable number.

1913688409464 is an abundant number, since it is smaller than the sum of its proper divisors (3698570903976).

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

1913688409464 is a wasteful number, since it uses less digits than its factorization.

1913688409464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157272261 (or 157272241 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 1913688409464 in words is "one trillion, nine hundred thirteen billion, six hundred eighty-eight million, four hundred nine thousand, four hundred sixty-four".