12154913 has 2 divisors, whose sum is σ = 12154914. Its totient is φ = 12154912.

The previous prime is 12154903. The next prime is 12154931. The reversal of 12154913 is 31945121.

Together with next prime (12154931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8025889 + 4129024 = 2833^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 12154913 - 2⁸ = 12154657 is a prime.

It is not a weakly prime, because it can be changed into another prime (12154903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077456 + 6077457.

It is an arithmetic number, because the mean of its divisors is an integer number (6077457).

Almost surely, 2^12154913 is an apocalyptic number.

It is an amenable number.

12154913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154913 is an equidigital number, since it uses as much as digits as its factorization.

12154913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 26.

The square root of 12154913 is about 3486.3896798838. The cubic root of 12154913 is about 229.9238121946.

The spelling of 12154913 in words is "twelve million, one hundred fifty-four thousand, nine hundred thirteen".