1012181369 has 2 divisors, whose sum is σ = 1012181370. Its totient is φ = 1012181368.

The previous prime is 1012181363. The next prime is 1012181399. The reversal of 1012181369 is 9631812101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763803769 + 248377600 = 27637^2 + 15760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012181369 - 2⁴ = 1012181353 is a prime.

It is a super-2 number, since 2×1012181369² = 2049022247501428322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1012181363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506090684 + 506090685.

It is an arithmetic number, because the mean of its divisors is an integer number (506090685).

Almost surely, 2^1012181369 is an apocalyptic number.

It is an amenable number.

1012181369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012181369 is an equidigital number, since it uses as much as digits as its factorization.

1012181369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1012181369 is about 31814.7979562970. The cubic root of 1012181369 is about 1004.0440797063.

The spelling of 1012181369 in words is "one billion, twelve million, one hundred eighty-one thousand, three hundred sixty-nine".