153663649 has 2 divisors, whose sum is σ = 153663650. Its totient is φ = 153663648.

The previous prime is 153663647. The next prime is 153663661. The reversal of 153663649 is 946366351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128663649 + 25000000 = 11343^2 + 5000^2 .

It is a cyclic number.

It is not a de Polignac number, because 153663649 - 2¹ = 153663647 is a prime.

It is a super-2 number, since 2×153663649² = 47225034047990402, which contains 22 as substring.

Together with 153663647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (153663647) 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, 76831824 + 76831825.

It is an arithmetic number, because the mean of its divisors is an integer number (76831825).

Almost surely, 2^153663649 is an apocalyptic number.

It is an amenable number.

153663649 is a deficient number, since it is larger than the sum of its proper divisors (1).

153663649 is an equidigital number, since it uses as much as digits as its factorization.

153663649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 43.

The square root of 153663649 is about 12396.1142702058. The cubic root of 153663649 is about 535.6203233535.

The spelling of 153663649 in words is "one hundred fifty-three million, six hundred sixty-three thousand, six hundred forty-nine".