1723608973 has 2 divisors, whose sum is σ = 1723608974. Its totient is φ = 1723608972.

The previous prime is 1723608941. The next prime is 1723609007. The reversal of 1723608973 is 3798063271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1722831049 + 777924 = 41507^2 + 882^2 .

It is a cyclic number.

It is not a de Polignac number, because 1723608973 - 2⁵ = 1723608941 is a prime.

It is a super-2 number, since 2×1723608973² = 5941655783612229458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1723608373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861804486 + 861804487.

It is an arithmetic number, because the mean of its divisors is an integer number (861804487).

Almost surely, 2^1723608973 is an apocalyptic number.

It is an amenable number.

1723608973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723608973 is an equidigital number, since it uses as much as digits as its factorization.

1723608973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 1723608973 is about 41516.3699400610. The cubic root of 1723608973 is about 1198.9826963863.

The spelling of 1723608973 in words is "one billion, seven hundred twenty-three million, six hundred eight thousand, nine hundred seventy-three".