1151323345 has 24 divisors (see below), whose sum is σ = 1454501160. Its totient is φ = 873841920.

The previous prime is 1151323331. The next prime is 1151323363. The reversal of 1151323345 is 5433231511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 162409536 + 988913809 = 12744^2 + 31447^2 .

It is not a de Polignac number, because 1151323345 - 2¹⁹ = 1150799057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 503605 + ... + 505885.

It is an arithmetic number, because the mean of its divisors is an integer number (60604215).

Almost surely, 2^1151323345 is an apocalyptic number.

It is an amenable number.

1151323345 is a deficient number, since it is larger than the sum of its proper divisors (303177815).

1151323345 is an equidigital number, since it uses as much as digits as its factorization.

1151323345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433 (or 2374 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 1151323345 is about 33931.1559632147. The cubic root of 1151323345 is about 1048.0912700579.

Adding to 1151323345 its reverse (5433231511), we get a palindrome (6584554856).

The spelling of 1151323345 in words is "one billion, one hundred fifty-one million, three hundred twenty-three thousand, three hundred forty-five".