1797121652 has 12 divisors (see below), whose sum is σ = 3281700576. Its totient is φ = 859492920.

The previous prime is 1797121643. The next prime is 1797121673. The reversal of 1797121652 is 2561217971.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9766874 + ... + 9767057.

It is an arithmetic number, because the mean of its divisors is an integer number (273475048).

Almost surely, 2^1797121652 is an apocalyptic number.

It is an amenable number.

1797121652 is a deficient number, since it is larger than the sum of its proper divisors (1484578924).

1797121652 is a wasteful number, since it uses less digits than its factorization.

1797121652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19533958 (or 19533956 counting only the distinct ones).

The product of its digits is 52920, while the sum is 41.

The square root of 1797121652 is about 42392.4716429698. The cubic root of 1797121652 is about 1215.7916571222.

The spelling of 1797121652 in words is "one billion, seven hundred ninety-seven million, one hundred twenty-one thousand, six hundred fifty-two".