1205160001 has 4 divisors (see below), whose sum is σ = 1205959104. Its totient is φ = 1204360900.

The previous prime is 1205159941. The next prime is 1205160013. The reversal of 1205160001 is 1000615021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000615021 = 7 ⋅142945003.

It is a cyclic number.

It is not a de Polignac number, because 1205160001 - 2²³ = 1196771393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205160031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397285 + ... + 400306.

It is an arithmetic number, because the mean of its divisors is an integer number (301489776).

Almost surely, 2^1205160001 is an apocalyptic number.

It is an amenable number.

1205160001 is a deficient number, since it is larger than the sum of its proper divisors (799103).

1205160001 is an equidigital number, since it uses as much as digits as its factorization.

1205160001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799102.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1205160001 is about 34715.4144581337. The cubic root of 1205160001 is about 1064.1795354536.

Adding to 1205160001 its reverse (1000615021), we get a palindrome (2205775022).

The spelling of 1205160001 in words is "one billion, two hundred five million, one hundred sixty thousand, one".