1151204405 has 8 divisors (see below), whose sum is σ = 1487710392. Its totient is φ = 850120128.

The previous prime is 1151204399. The next prime is 1151204407. The reversal of 1151204405 is 5044021511.

It can be written as a sum of positive squares in 4 ways, for example, as 22714756 + 1128489649 = 4766^2 + 33593^2 .

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

It is not a de Polignac number, because 1151204405 - 2²⁸ = 882768949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151204407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8855354 + ... + 8855483.

It is an arithmetic number, because the mean of its divisors is an integer number (185963799).

Almost surely, 2^1151204405 is an apocalyptic number.

It is an amenable number.

1151204405 is a deficient number, since it is larger than the sum of its proper divisors (336505987).

1151204405 is a wasteful number, since it uses less digits than its factorization.

1151204405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17710855.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1151204405 is about 33929.4032514573. The cubic root of 1151204405 is about 1048.0551770208.

Adding to 1151204405 its reverse (5044021511), we get a palindrome (6195225916).

The spelling of 1151204405 in words is "one billion, one hundred fifty-one million, two hundred four thousand, four hundred five".