1101649 has 2 divisors, whose sum is σ = 1101650. Its totient is φ = 1101648.

The previous prime is 1101641. The next prime is 1101671. The reversal of 1101649 is 9461011.

It is an a-pointer prime, because the next prime (1101671) can be obtained adding 1101649 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 986049 + 115600 = 993^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101649 - 2³ = 1101641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550824 + 550825.

It is an arithmetic number, because the mean of its divisors is an integer number (550825).

2^1101649 is an apocalyptic number.

It is an amenable number.

1101649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101649 is an equidigital number, since it uses as much as digits as its factorization.

1101649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1101649 is about 1049.5946836756. The cubic root of 1101649 is about 103.2795685159.

The spelling of 1101649 in words is "one million, one hundred one thousand, six hundred forty-nine".