1997829793 has 8 divisors (see below), whose sum is σ = 2025308736. Its totient is φ = 1970502000.

The previous prime is 1997829791. The next prime is 1997829863. The reversal of 1997829793 is 3979287991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1997829793 - 2¹ = 1997829791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1997829791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11043 + ... + 64168.

It is an arithmetic number, because the mean of its divisors is an integer number (253163592).

Almost surely, 2^1997829793 is an apocalyptic number.

It is an amenable number.

1997829793 is a deficient number, since it is larger than the sum of its proper divisors (27478943).

1997829793 is a wasteful number, since it uses less digits than its factorization.

1997829793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75575.

The product of its digits is 15431472, while the sum is 64.

The square root of 1997829793 is about 44697.0893123926. The cubic root of 1997829793 is about 1259.4651700492.

The spelling of 1997829793 in words is "one billion, nine hundred ninety-seven million, eight hundred twenty-nine thousand, seven hundred ninety-three".