1791106920 has 48 divisors (see below), whose sum is σ = 5821098660. Its totient is φ = 477628416.

The previous prime is 1791106909. The next prime is 1791106931. The reversal of 1791106920 is 296011971.

It is an interprime number because it is at equal distance from previous prime (1791106909) and next prime (1791106931).

It can be written as a sum of positive squares in 2 ways, for example, as 1753431876 + 37675044 = 41874^2 + 6138^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2487289 + ... + 2488008.

Almost surely, 2^1791106920 is an apocalyptic number.

1791106920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1791106920 is an abundant number, since it is smaller than the sum of its proper divisors (4029991740).

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

1791106920 is a wasteful number, since it uses less digits than its factorization.

1791106920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975314 (or 4975307 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 1791106920 is about 42321.4711464524. The cubic root of 1791106920 is about 1214.4337756910.

The spelling of 1791106920 in words is "one billion, seven hundred ninety-one million, one hundred six thousand, nine hundred twenty".