1268745662 has 4 divisors (see below), whose sum is σ = 1903118496. Its totient is φ = 634372830.

The previous prime is 1268745661. The next prime is 1268745677. The reversal of 1268745662 is 2665478621.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268745661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317186414 + ... + 317186417.

It is an arithmetic number, because the mean of its divisors is an integer number (475779624).

Almost surely, 2^1268745662 is an apocalyptic number.

1268745662 is a deficient number, since it is larger than the sum of its proper divisors (634372834).

1268745662 is an equidigital number, since it uses as much as digits as its factorization.

1268745662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634372833.

The product of its digits is 967680, while the sum is 47.

The square root of 1268745662 is about 35619.4562283031. The cubic root of 1268745662 is about 1082.5754896890.

The spelling of 1268745662 in words is "one billion, two hundred sixty-eight million, seven hundred forty-five thousand, six hundred sixty-two".