1775645049 has 16 divisors (see below), whose sum is σ = 2391165504. Its totient is φ = 1171968000.

The previous prime is 1775645041. The next prime is 1775645077. The reversal of 1775645049 is 9405465771.

It is not a de Polignac number, because 1775645049 - 2³ = 1775645041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1775644989 and 1775645007.

It is not an unprimeable number, because it can be changed into a prime (1775645041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367449 + ... + 372249.

It is an arithmetic number, because the mean of its divisors is an integer number (149447844).

Almost surely, 2^1775645049 is an apocalyptic number.

It is an amenable number.

1775645049 is a deficient number, since it is larger than the sum of its proper divisors (615520455).

1775645049 is a wasteful number, since it uses less digits than its factorization.

1775645049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6008.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 1775645049 is about 42138.4034937253. The cubic root of 1775645049 is about 1210.9291065366.

The spelling of 1775645049 in words is "one billion, seven hundred seventy-five million, six hundred forty-five thousand, forty-nine".