1329661797 has 8 divisors (see below), whose sum is σ = 1774229760. Its totient is φ = 885767520.

The previous prime is 1329661789. The next prime is 1329661871. The reversal of 1329661797 is 7971669231.

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

It is not a de Polignac number, because 1329661797 - 2³ = 1329661789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329661747) 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, 163797 + ... + 171722.

It is an arithmetic number, because the mean of its divisors is an integer number (221778720).

Almost surely, 2^1329661797 is an apocalyptic number.

It is an amenable number.

1329661797 is a deficient number, since it is larger than the sum of its proper divisors (444567963).

1329661797 is a wasteful number, since it uses less digits than its factorization.

1329661797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336843.

The product of its digits is 857304, while the sum is 51.

The square root of 1329661797 is about 36464.5279278369. The cubic root of 1329661797 is about 1099.6312254181.

The spelling of 1329661797 in words is "one billion, three hundred twenty-nine million, six hundred sixty-one thousand, seven hundred ninety-seven".