1772994245 has 24 divisors (see below), whose sum is σ = 2342165112. Its totient is φ = 1287482240.

The previous prime is 1772994239. The next prime is 1772994247. The reversal of 1772994245 is 5424992771.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 369293089 + 1403701156 = 19217^2 + 37466^2 .

It is not a de Polignac number, because 1772994245 - 2²⁶ = 1705885381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1772994193 and 1772994202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772994247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 480347 + ... + 484023.

It is an arithmetic number, because the mean of its divisors is an integer number (97590213).

Almost surely, 2^1772994245 is an apocalyptic number.

It is an amenable number.

1772994245 is a deficient number, since it is larger than the sum of its proper divisors (569170867).

1772994245 is a wasteful number, since it uses less digits than its factorization.

1772994245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501 (or 4490 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 1772994245 is about 42106.9382050037. The cubic root of 1772994245 is about 1210.3262205817.

The spelling of 1772994245 in words is "one billion, seven hundred seventy-two million, nine hundred ninety-four thousand, two hundred forty-five".