1338073780 has 12 divisors (see below), whose sum is σ = 2809954980. Its totient is φ = 535229504.

The previous prime is 1338073777. The next prime is 1338073823. The reversal of 1338073780 is 873708331.

It can be written as a sum of positive squares in 2 ways, for example, as 351862564 + 986211216 = 18758^2 + 31404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33451825 + ... + 33451864.

It is an arithmetic number, because the mean of its divisors is an integer number (234162915).

Almost surely, 2^1338073780 is an apocalyptic number.

1338073780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338073780 is an abundant number, since it is smaller than the sum of its proper divisors (1471881200).

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

1338073780 is a wasteful number, since it uses less digits than its factorization.

1338073780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66903698 (or 66903696 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 1338073780 is about 36579.6908133461. The cubic root of 1338073780 is about 1101.9452576718.

The spelling of 1338073780 in words is "one billion, three hundred thirty-eight million, seventy-three thousand, seven hundred eighty".