101912749 has 2 divisors, whose sum is σ = 101912750. Its totient is φ = 101912748.

The previous prime is 101912731. The next prime is 101912753. The reversal of 101912749 is 947219101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101868649 + 44100 = 10093^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 101912749 - 2¹⁹ = 101388461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101912729) 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, 50956374 + 50956375.

It is an arithmetic number, because the mean of its divisors is an integer number (50956375).

Almost surely, 2^101912749 is an apocalyptic number.

It is an amenable number.

101912749 is a deficient number, since it is larger than the sum of its proper divisors (1).

101912749 is an equidigital number, since it uses as much as digits as its factorization.

101912749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 101912749 is about 10095.1844460614. The cubic root of 101912749 is about 467.0996108589.

The spelling of 101912749 in words is "one hundred one million, nine hundred twelve thousand, seven hundred forty-nine".