1772117648 has 20 divisors (see below), whose sum is σ = 3923975040. Its totient is φ = 759478944.

The previous prime is 1772117623. The next prime is 1772117681. The reversal of 1772117648 is 8467112771.

It is a junction number, because it is equal to n+sod(n) for n = 1772117599 and 1772117608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7911128 + ... + 7911351.

It is an arithmetic number, because the mean of its divisors is an integer number (196198752).

Almost surely, 2^1772117648 is an apocalyptic number.

It is an amenable number.

1772117648 is an abundant number, since it is smaller than the sum of its proper divisors (2151857392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1772117648 is a wasteful number, since it uses less digits than its factorization.

1772117648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15822494 (or 15822488 counting only the distinct ones).

The product of its digits is 131712, while the sum is 44.

The square root of 1772117648 is about 42096.5277427961. The cubic root of 1772117648 is about 1210.1267194199.

The spelling of 1772117648 in words is "one billion, seven hundred seventy-two million, one hundred seventeen thousand, six hundred forty-eight".