1790220971 has 16 divisors (see below), whose sum is σ = 2233086720. Its totient is φ = 1394275680.

The previous prime is 1790220967. The next prime is 1790220997.

1790220971 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1790220971 - 2² = 1790220967 is a prime.

It is a super-2 number, since 2×1790220971² = 6409782250016365682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1790220931) 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, 190925 + ... + 200081.

It is an arithmetic number, because the mean of its divisors is an integer number (139567920).

Almost surely, 2^1790220971 is an apocalyptic number.

1790220971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1790220971 is a deficient number, since it is larger than the sum of its proper divisors (442865749).

1790220971 is a wasteful number, since it uses less digits than its factorization.

1790220971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11714.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 1790220971 is about 42311.0029543144. The cubic root of 1790220971 is about 1214.2335077591.

The spelling of 1790220971 in words is "one billion, seven hundred ninety million, two hundred twenty thousand, nine hundred seventy-one".