1155904322 has 4 divisors (see below), whose sum is σ = 1733856486. Its totient is φ = 577952160.

The previous prime is 1155904319. The next prime is 1155904327. The reversal of 1155904322 is 2234095511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 999128881 + 156775441 = 31609^2 + 12521^2 .

It is a super-2 number, since 2×1155904322² = 2672229603236559368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155904327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288976079 + ... + 288976082.

Almost surely, 2^1155904322 is an apocalyptic number.

1155904322 is a deficient number, since it is larger than the sum of its proper divisors (577952164).

1155904322 is an equidigital number, since it uses as much as digits as its factorization.

1155904322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577952163.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1155904322 is about 33998.5929414733. The cubic root of 1155904322 is about 1049.4795068071.

Adding to 1155904322 its reverse (2234095511), we get a palindrome (3389999833).

The spelling of 1155904322 in words is "one billion, one hundred fifty-five million, nine hundred four thousand, three hundred twenty-two".