1797320447 has 12 divisors (see below), whose sum is σ = 2042815320. Its totient is φ = 1571741712.

The previous prime is 1797320423. The next prime is 1797320489. The reversal of 1797320447 is 7440237971.

It is not a de Polignac number, because 1797320447 - 2⁸ = 1797320191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1797320398 and 1797320407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1797320417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186797 + ... + 196182.

It is an arithmetic number, because the mean of its divisors is an integer number (170234610).

Almost surely, 2^1797320447 is an apocalyptic number.

1797320447 is a deficient number, since it is larger than the sum of its proper divisors (245494873).

1797320447 is a wasteful number, since it uses less digits than its factorization.

1797320447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383030 (or 383011 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 1797320447 is about 42394.8162751061. The cubic root of 1797320447 is about 1215.8364851747.

The spelling of 1797320447 in words is "one billion, seven hundred ninety-seven million, three hundred twenty thousand, four hundred forty-seven".