1722610816 has 64 divisors (see below), whose sum is σ = 3643872480. Its totient is φ = 808357888.

The previous prime is 1722610807. The next prime is 1722610819. The reversal of 1722610816 is 6180162271.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1722610819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963075 + ... + 964861.

Almost surely, 2^1722610816 is an apocalyptic number.

1722610816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722610816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821936240).

1722610816 is an abundant number, since it is smaller than the sum of its proper divisors (1921261664).

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

1722610816 is a wasteful number, since it uses less digits than its factorization.

1722610816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1722610816 is about 41504.3469530602. The cubic root of 1722610816 is about 1198.7512045795.

The spelling of 1722610816 in words is "one billion, seven hundred twenty-two million, six hundred ten thousand, eight hundred sixteen".