1338656770 has 16 divisors (see below), whose sum is σ = 2628635328. Its totient is φ = 486784240.

The previous prime is 1338656747. The next prime is 1338656771. The reversal of 1338656770 is 776568331.

It is a self number, because there is not a number n which added to its sum of digits gives 1338656770.

It is not an unprimeable number, because it can be changed into a prime (1338656771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6084694 + ... + 6084913.

It is an arithmetic number, because the mean of its divisors is an integer number (164289708).

Almost surely, 2^1338656770 is an apocalyptic number.

1338656770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1338656770 is a deficient number, since it is larger than the sum of its proper divisors (1289978558).

1338656770 is a wasteful number, since it uses less digits than its factorization.

1338656770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12169625.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 1338656770 is about 36587.6587116476. The cubic root of 1338656770 is about 1102.1052712172.

The spelling of 1338656770 in words is "one billion, three hundred thirty-eight million, six hundred fifty-six thousand, seven hundred seventy".