1012207869 has 18 divisors (see below), whose sum is σ = 1472925246. Its totient is φ = 669835440.

The previous prime is 1012207849. The next prime is 1012207873. The reversal of 1012207869 is 9687022101.

It can be written as a sum of positive squares in only one way, i.e., 978125625 + 34082244 = 31275^2 + 5838^2 .

It is not a de Polignac number, because 1012207869 - 2⁷ = 1012207741 is a prime.

It is a super-2 number, since 2×1012207869² = 2049129540131042322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012207849) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 170979 + ... + 176799.

Almost surely, 2^1012207869 is an apocalyptic number.

It is an amenable number.

1012207869 is a deficient number, since it is larger than the sum of its proper divisors (460717377).

1012207869 is an equidigital number, since it uses as much as digits as its factorization.

1012207869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105 (or 5963 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1012207869 is about 31815.2144264344. The cubic root of 1012207869 is about 1004.0528419488.

The spelling of 1012207869 in words is "one billion, twelve million, two hundred seven thousand, eight hundred sixty-nine".