121649183 has 2 divisors, whose sum is σ = 121649184. Its totient is φ = 121649182.

The previous prime is 121649167. The next prime is 121649197. The reversal of 121649183 is 381946121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121649183 - 2⁴ = 121649167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121649683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60824591 + 60824592.

It is an arithmetic number, because the mean of its divisors is an integer number (60824592).

Almost surely, 2^121649183 is an apocalyptic number.

121649183 is a deficient number, since it is larger than the sum of its proper divisors (1).

121649183 is an equidigital number, since it uses as much as digits as its factorization.

121649183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 121649183 is about 11029.4688448719. The cubic root of 121649183 is about 495.4917169399.

The spelling of 121649183 in words is "one hundred twenty-one million, six hundred forty-nine thousand, one hundred eighty-three".