1154432013 has 40 divisors (see below), whose sum is σ = 1805098848. Its totient is φ = 656222112.

The previous prime is 1154432011. The next prime is 1154432023. The reversal of 1154432013 is 3102344511.

It is a happy number.

It is not a de Polignac number, because 1154432013 - 2¹ = 1154432011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154432011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2110206 + ... + 2110752.

Almost surely, 2^1154432013 is an apocalyptic number.

It is an amenable number.

1154432013 is a deficient number, since it is larger than the sum of its proper divisors (650666835).

1154432013 is an frugal number, since it uses more digits than its factorization.

1154432013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1154432013 is about 33976.9335432143. The cubic root of 1154432013 is about 1049.0337332842.

Adding to 1154432013 its reverse (3102344511), we get a palindrome (4256776524).

The spelling of 1154432013 in words is "one billion, one hundred fifty-four million, four hundred thirty-two thousand, thirteen".