1912717664 has 216 divisors, whose sum is σ = 4661405280. Its totient is φ = 770964480.

The previous prime is 1912717657. The next prime is 1912717673. The reversal of 1912717664 is 4667172191.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24211577 + ... + 24211655.

It is an arithmetic number, because the mean of its divisors is an integer number (21580580).

Almost surely, 2^1912717664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1912717664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2330702640).

1912717664 is an abundant number, since it is smaller than the sum of its proper divisors (2748687616).

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

1912717664 is a wasteful number, since it uses less digits than its factorization.

1912717664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 142 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 1912717664 is about 43734.6277450718. The cubic root of 1912717664 is about 1241.3196287763.

The spelling of 1912717664 in words is "one billion, nine hundred twelve million, seven hundred seventeen thousand, six hundred sixty-four".