1268489722 has 16 divisors (see below), whose sum is σ = 1956874752. Its totient is φ = 616245840.

The previous prime is 1268489707. The next prime is 1268489737. The reversal of 1268489722 is 2279848621.

It is an interprime number because it is at equal distance from previous prime (1268489707) and next prime (1268489737).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43447 + ... + 66517.

It is an arithmetic number, because the mean of its divisors is an integer number (122304672).

Almost surely, 2^1268489722 is an apocalyptic number.

1268489722 is a deficient number, since it is larger than the sum of its proper divisors (688385030).

1268489722 is a wasteful number, since it uses less digits than its factorization.

1268489722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23853.

The product of its digits is 774144, while the sum is 49.

The square root of 1268489722 is about 35615.8633476714. The cubic root of 1268489722 is about 1082.5026899645.

It can be divided in two parts, 126 and 8489722, that added together give a palindrome (8489848).

The spelling of 1268489722 in words is "one billion, two hundred sixty-eight million, four hundred eighty-nine thousand, seven hundred twenty-two".