1012019189 has 2 divisors, whose sum is σ = 1012019190. Its totient is φ = 1012019188.

The previous prime is 1012019179. The next prime is 1012019209. The reversal of 1012019189 is 9819102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605996689 + 406022500 = 24617^2 + 20150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012019189 - 2⁸ = 1012018933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012019179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506009594 + 506009595.

It is an arithmetic number, because the mean of its divisors is an integer number (506009595).

Almost surely, 2^1012019189 is an apocalyptic number.

It is an amenable number.

1012019189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012019189 is an equidigital number, since it uses as much as digits as its factorization.

1012019189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 32.

The square root of 1012019189 is about 31812.2490402675. The cubic root of 1012019189 is about 1003.9904514496.

The spelling of 1012019189 in words is "one billion, twelve million, nineteen thousand, one hundred eighty-nine".