1597408121 has 8 divisors (see below), whose sum is σ = 1667315904. Its totient is φ = 1527538320.

The previous prime is 1597408097. The next prime is 1597408133. The reversal of 1597408121 is 1218047951.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1597408121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1597408321) 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, 107006 + ... + 121016.

It is an arithmetic number, because the mean of its divisors is an integer number (208414488).

Almost surely, 2^1597408121 is an apocalyptic number.

It is an amenable number.

1597408121 is a deficient number, since it is larger than the sum of its proper divisors (69907783).

1597408121 is a wasteful number, since it uses less digits than its factorization.

1597408121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18991.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1597408121 is about 39967.5883810870. The cubic root of 1597408121 is about 1168.9751956047.

The spelling of 1597408121 in words is "one billion, five hundred ninety-seven million, four hundred eight thousand, one hundred twenty-one".