1791211412 has 12 divisors (see below), whose sum is σ = 3135572916. Its totient is φ = 895333440.

The previous prime is 1791211393. The next prime is 1791211421. The reversal of 1791211412 is 2141121971.

It can be written as a sum of positive squares in 2 ways, for example, as 1494131716 + 297079696 = 38654^2 + 17236^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 52889 + ... + 79872.

It is an arithmetic number, because the mean of its divisors is an integer number (261297743).

Almost surely, 2^1791211412 is an apocalyptic number.

It is an amenable number.

1791211412 is a deficient number, since it is larger than the sum of its proper divisors (1344361504).

1791211412 is a wasteful number, since it uses less digits than its factorization.

1791211412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136138 (or 136136 counting only the distinct ones).

The product of its digits is 1008, while the sum is 29.

The square root of 1791211412 is about 42322.7056318473. The cubic root of 1791211412 is about 1214.4573916544.

The spelling of 1791211412 in words is "one billion, seven hundred ninety-one million, two hundred eleven thousand, four hundred twelve".