1772671965 has 8 divisors (see below), whose sum is σ = 2836275168. Its totient is φ = 945425040.

The previous prime is 1772671963. The next prime is 1772672029. The reversal of 1772671965 is 5691762771.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1772671965 - 2¹ = 1772671963 is a prime.

It is a super-2 number, since 2×1772671965² = 6284731790993922450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772671963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59089051 + ... + 59089080.

It is an arithmetic number, because the mean of its divisors is an integer number (354534396).

Almost surely, 2^1772671965 is an apocalyptic number.

1772671965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1772671965 is a deficient number, since it is larger than the sum of its proper divisors (1063603203).

1772671965 is a wasteful number, since it uses less digits than its factorization.

1772671965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118178139.

The product of its digits is 1111320, while the sum is 51.

The square root of 1772671965 is about 42103.1111083255. Note that the first 4 decimals coincide. The cubic root of 1772671965 is about 1210.2528818269.

The spelling of 1772671965 in words is "one billion, seven hundred seventy-two million, six hundred seventy-one thousand, nine hundred sixty-five".