18152013 has 8 divisors (see below), whose sum is σ = 26402976. Its totient is φ = 11001200.

The previous prime is 18152009. The next prime is 18152021. The reversal of 18152013 is 31025181.

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

It is a cyclic number.

It is not a de Polignac number, because 18152013 - 2² = 18152009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18152213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274998 + ... + 275063.

It is an arithmetic number, because the mean of its divisors is an integer number (3300372).

Almost surely, 2^18152013 is an apocalyptic number.

It is an amenable number.

18152013 is a deficient number, since it is larger than the sum of its proper divisors (8250963).

18152013 is a wasteful number, since it uses less digits than its factorization.

18152013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550075.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 18152013 is about 4260.5179262620. The cubic root of 18152013 is about 262.8098255560.

Adding to 18152013 its reverse (31025181), we get a palindrome (49177194).

It can be divided in two parts, 1815 and 2013, that added together give a triangular number (3828 = T₈₇).

The spelling of 18152013 in words is "eighteen million, one hundred fifty-two thousand, thirteen".