1101023149 has 2 divisors, whose sum is σ = 1101023150. Its totient is φ = 1101023148.

The previous prime is 1101023123. The next prime is 1101023227. The reversal of 1101023149 is 9413201011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057225225 + 43797924 = 32515^2 + 6618^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101023149 - 2²³ = 1092634541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101023849) 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 as a sum of consecutive naturals, namely, 550511574 + 550511575.

It is an arithmetic number, because the mean of its divisors is an integer number (550511575).

Almost surely, 2^1101023149 is an apocalyptic number.

It is an amenable number.

1101023149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101023149 is an equidigital number, since it uses as much as digits as its factorization.

1101023149 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1101023149 is about 33181.6688700252. The cubic root of 1101023149 is about 1032.6000697214.

The spelling of 1101023149 in words is "one billion, one hundred one million, twenty-three thousand, one hundred forty-nine".