1154345321 has 16 divisors (see below), whose sum is σ = 1216753920. Its totient is φ = 1093012800.

The previous prime is 1154345293. The next prime is 1154345327. The reversal of 1154345321 is 1235434511.

It is a cyclic number.

It is not a de Polignac number, because 1154345321 - 2²² = 1150151017 is a prime.

It is a super-2 number, since 2×1154345321² = 2665026240229186082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154345327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1767431 + ... + 1768083.

It is an arithmetic number, because the mean of its divisors is an integer number (76047120).

Almost surely, 2^1154345321 is an apocalyptic number.

It is an amenable number.

1154345321 is a deficient number, since it is larger than the sum of its proper divisors (62408599).

1154345321 is a wasteful number, since it uses less digits than its factorization.

1154345321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its digits is 7200, while the sum is 29.

The square root of 1154345321 is about 33975.6577714104. The cubic root of 1154345321 is about 1049.0074735859.

Adding to 1154345321 its reverse (1235434511), we get a palindrome (2389779832).

The spelling of 1154345321 in words is "one billion, one hundred fifty-four million, three hundred forty-five thousand, three hundred twenty-one".