1791946140 has 24 divisors (see below), whose sum is σ = 5017449360. Its totient is φ = 477852288.

The previous prime is 1791946139. The next prime is 1791946151. The reversal of 1791946140 is 416491971.

It is a super-2 number, since 2×1791946140² = 6422141937321799200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1791946092 and 1791946101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14932825 + ... + 14932944.

It is an arithmetic number, because the mean of its divisors is an integer number (209060390).

Almost surely, 2^1791946140 is an apocalyptic number.

1791946140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1791946140 is an abundant number, since it is smaller than the sum of its proper divisors (3225503220).

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

1791946140 is a wasteful number, since it uses less digits than its factorization.

1791946140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29865781 (or 29865779 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 1791946140 is about 42331.3848107997. The cubic root of 1791946140 is about 1214.6234196788.

The spelling of 1791946140 in words is "one billion, seven hundred ninety-one million, nine hundred forty-six thousand, one hundred forty".