1797227971 has 16 divisors (see below), whose sum is σ = 2288378880. Its totient is φ = 1370638080.

The previous prime is 1797227963. The next prime is 1797227983.

It is a happy number.

1797227971 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1797227971 - 2³ = 1797227963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1797227921) 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, 244686 + ... + 251923.

It is an arithmetic number, because the mean of its divisors is an integer number (143023680).

Almost surely, 2^1797227971 is an apocalyptic number.

1797227971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1797227971 is a deficient number, since it is larger than the sum of its proper divisors (491150909).

1797227971 is a wasteful number, since it uses less digits than its factorization.

1797227971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496674.

The product of its digits is 777924, while the sum is 52.

The square root of 1797227971 is about 42393.7256088681. The cubic root of 1797227971 is about 1215.8156323503.

The spelling of 1797227971 in words is "one billion, seven hundred ninety-seven million, two hundred twenty-seven thousand, nine hundred seventy-one".