1268991170 has 8 divisors (see below), whose sum is σ = 2284184124. Its totient is φ = 507596464.

The previous prime is 1268991079. The next prime is 1268991173. The reversal of 1268991170 is 711998621.

It can be written as a sum of positive squares in 2 ways, for example, as 1107624961 + 161366209 = 33281^2 + 12703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1268991170² = 3220677179075937800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1268991173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63449549 + ... + 63449568.

Almost surely, 2^1268991170 is an apocalyptic number.

1268991170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268991170 is a deficient number, since it is larger than the sum of its proper divisors (1015192954).

1268991170 is a wasteful number, since it uses less digits than its factorization.

1268991170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126899124.

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1268991170 is about 35622.9023242071. The cubic root of 1268991170 is about 1082.6453129299.

The spelling of 1268991170 in words is "one billion, two hundred sixty-eight million, nine hundred ninety-one thousand, one hundred seventy".