1797789906 has 48 divisors (see below), whose sum is σ = 4252536288. Its totient is φ = 544372800.

The previous prime is 1797789893. The next prime is 1797789923. The reversal of 1797789906 is 6099877971.

It is a super-2 number, since 2×1797789906² = 6464097092230977672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351286 + ... + 356366.

It is an arithmetic number, because the mean of its divisors is an integer number (88594506).

Almost surely, 2^1797789906 is an apocalyptic number.

1797789906 is an abundant number, since it is smaller than the sum of its proper divisors (2454746382).

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

1797789906 is a wasteful number, since it uses less digits than its factorization.

1797789906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6887 (or 6884 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 63.

The square root of 1797789906 is about 42400.3526636277. The cubic root of 1797789906 is about 1215.9423345411.

The spelling of 1797789906 in words is "one billion, seven hundred ninety-seven million, seven hundred eighty-nine thousand, nine hundred six".