1659323097 has 32 divisors (see below), whose sum is σ = 2616485760. Its totient is φ = 1035694080.

The previous prime is 1659323077. The next prime is 1659323101. The reversal of 1659323097 is 7903239561.

It is not a de Polignac number, because 1659323097 - 2⁶ = 1659323033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1659323077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79222 + ... + 97952.

It is an arithmetic number, because the mean of its divisors is an integer number (81765180).

Almost surely, 2^1659323097 is an apocalyptic number.

1659323097 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1659323097 is a deficient number, since it is larger than the sum of its proper divisors (957162663).

1659323097 is a wasteful number, since it uses less digits than its factorization.

1659323097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18950 (or 18944 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 45.

The square root of 1659323097 is about 40734.7897625605. The cubic root of 1659323097 is about 1183.8871847499.

The spelling of 1659323097 in words is "one billion, six hundred fifty-nine million, three hundred twenty-three thousand, ninety-seven".