1268038662 has 64 divisors (see below), whose sum is σ = 2836214784. Its totient is φ = 374653440.

The previous prime is 1268038649. The next prime is 1268038669. The reversal of 1268038662 is 2668308621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268038669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1044768 + ... + 1045980.

It is an arithmetic number, because the mean of its divisors is an integer number (44315856).

Almost surely, 2^1268038662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1268038662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418107392).

1268038662 is an abundant number, since it is smaller than the sum of its proper divisors (1568176122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1268038662 is a wasteful number, since it uses less digits than its factorization.

1268038662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 1268038662 is about 35609.5304939562. The cubic root of 1268038662 is about 1082.3743663522.

The spelling of 1268038662 in words is "one billion, two hundred sixty-eight million, thirty-eight thousand, six hundred sixty-two".