1722770741 has 4 divisors (see below), whose sum is σ = 1725563532. Its totient is φ = 1719977952.

The previous prime is 1722770737. The next prime is 1722770743. The reversal of 1722770741 is 1470772271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1470772271 = 227 ⋅6479173.

It can be written as a sum of positive squares in 2 ways, for example, as 830016100 + 892754641 = 28810^2 + 29879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1722770741 - 2² = 1722770737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1722770695 and 1722770704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722770743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395470 + ... + 1396703.

It is an arithmetic number, because the mean of its divisors is an integer number (431390883).

Almost surely, 2^1722770741 is an apocalyptic number.

It is an amenable number.

1722770741 is a deficient number, since it is larger than the sum of its proper divisors (2792791).

1722770741 is an equidigital number, since it uses as much as digits as its factorization.

1722770741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792790.

The product of its (nonzero) digits is 38416, while the sum is 38.

The square root of 1722770741 is about 41506.2735137714. The cubic root of 1722770741 is about 1198.7883002779.

The spelling of 1722770741 in words is "one billion, seven hundred twenty-two million, seven hundred seventy thousand, seven hundred forty-one".