1205331145 has 8 divisors (see below), whose sum is σ = 1466769600. Its totient is φ = 950683440.

The previous prime is 1205331143. The next prime is 1205331157. The reversal of 1205331145 is 5411335021.

It is a happy number.

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

It is not a de Polignac number, because 1205331145 - 2¹ = 1205331143 is a prime.

It is a super-2 number, since 2×1205331145² = 2905646338214022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1205331143) 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, 1697295 + ... + 1698004.

It is an arithmetic number, because the mean of its divisors is an integer number (183346200).

Almost surely, 2^1205331145 is an apocalyptic number.

It is an amenable number.

1205331145 is a deficient number, since it is larger than the sum of its proper divisors (261438455).

1205331145 is an equidigital number, since it uses as much as digits as its factorization.

1205331145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395375.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1205331145 is about 34717.8793275165. The cubic root of 1205331145 is about 1064.2299075540.

Adding to 1205331145 its reverse (5411335021), we get a palindrome (6616666166).

The spelling of 1205331145 in words is "one billion, two hundred five million, three hundred thirty-one thousand, one hundred forty-five".