1019939149 has 2 divisors, whose sum is σ = 1019939150. Its totient is φ = 1019939148.

The previous prime is 1019939131. The next prime is 1019939177. The reversal of 1019939149 is 9419399101.

1019939149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 925984900 + 93954249 = 30430^2 + 9693^2 .

It is a cyclic number.

It is not a de Polignac number, because 1019939149 - 2²⁵ = 986384717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1019939099 and 1019939108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1019969149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509969574 + 509969575.

It is an arithmetic number, because the mean of its divisors is an integer number (509969575).

Almost surely, 2^1019939149 is an apocalyptic number.

It is an amenable number.

1019939149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019939149 is an equidigital number, since it uses as much as digits as its factorization.

1019939149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 46.

The square root of 1019939149 is about 31936.4861717754. The cubic root of 1019939149 is about 1006.6026915155.

The spelling of 1019939149 in words is "one billion, nineteen million, nine hundred thirty-nine thousand, one hundred forty-nine".