1268618485 has 16 divisors (see below), whose sum is σ = 1575903600. Its totient is φ = 979234816.

The previous prime is 1268618473. The next prime is 1268618503. The reversal of 1268618485 is 5848168621.

It can be written as a sum of positive squares in 8 ways, for example, as 175456516 + 1093161969 = 13246^2 + 33063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1268618485 - 2²⁵ = 1235064053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402837 + ... + 405973.

It is an arithmetic number, because the mean of its divisors is an integer number (98493975).

Almost surely, 2^1268618485 is an apocalyptic number.

It is an amenable number.

1268618485 is a deficient number, since it is larger than the sum of its proper divisors (307285115).

1268618485 is a wasteful number, since it uses less digits than its factorization.

1268618485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960.

The product of its digits is 737280, while the sum is 49.

The square root of 1268618485 is about 35617.6709654070. The cubic root of 1268618485 is about 1082.5393166120.

The spelling of 1268618485 in words is "one billion, two hundred sixty-eight million, six hundred eighteen thousand, four hundred eighty-five".