1722912245 has 4 divisors (see below), whose sum is σ = 2067494700. Its totient is φ = 1378329792.

The previous prime is 1722912239. The next prime is 1722912251. The reversal of 1722912245 is 5422192271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5422192271 = 47 ⋅115365793.

It is an interprime number because it is at equal distance from previous prime (1722912239) and next prime (1722912251).

It can be written as a sum of positive squares in 2 ways, for example, as 1312323076 + 410589169 = 36226^2 + 20263^2 .

It is a cyclic number.

It is not a de Polignac number, because 1722912245 - 2¹⁰ = 1722911221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172291220 + ... + 172291229.

It is an arithmetic number, because the mean of its divisors is an integer number (516873675).

Almost surely, 2^1722912245 is an apocalyptic number.

It is an amenable number.

1722912245 is a deficient number, since it is larger than the sum of its proper divisors (344582455).

1722912245 is an equidigital number, since it uses as much as digits as its factorization.

1722912245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344582454.

The product of its digits is 20160, while the sum is 35.

The square root of 1722912245 is about 41507.9780885555. The cubic root of 1722912245 is about 1198.8211211850.

The spelling of 1722912245 in words is "one billion, seven hundred twenty-two million, nine hundred twelve thousand, two hundred forty-five".