1722065790 has 16 divisors (see below), whose sum is σ = 4132957968. Its totient is φ = 459217536.

The previous prime is 1722065783. The next prime is 1722065797. The reversal of 1722065790 is 975602271.

It is an interprime number because it is at equal distance from previous prime (1722065783) and next prime (1722065797).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722065797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28701067 + ... + 28701126.

It is an arithmetic number, because the mean of its divisors is an integer number (258309873).

Almost surely, 2^1722065790 is an apocalyptic number.

1722065790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1722065790 is an abundant number, since it is smaller than the sum of its proper divisors (2410892178).

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

1722065790 is a wasteful number, since it uses less digits than its factorization.

1722065790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57402203.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 1722065790 is about 41497.7805430604. The cubic root of 1722065790 is about 1198.6247648200.

The spelling of 1722065790 in words is "one billion, seven hundred twenty-two million, sixty-five thousand, seven hundred ninety".