1380138212 has 6 divisors (see below), whose sum is σ = 2415241878. Its totient is φ = 690069104.

The previous prime is 1380138211. The next prime is 1380138229. The reversal of 1380138212 is 2128310831.

It can be written as a sum of positive squares in only one way, i.e., 796142656 + 583995556 = 28216^2 + 24166^2 .

It is not an unprimeable number, because it can be changed into a prime (1380138211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172517273 + ... + 172517280.

It is an arithmetic number, because the mean of its divisors is an integer number (402540313).

Almost surely, 2^1380138212 is an apocalyptic number.

It is an amenable number.

1380138212 is a deficient number, since it is larger than the sum of its proper divisors (1035103666).

1380138212 is a wasteful number, since it uses less digits than its factorization.

1380138212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345034557 (or 345034555 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1380138212 is about 37150.2114664237. The cubic root of 1380138212 is about 1113.3734485010.

The spelling of 1380138212 in words is "one billion, three hundred eighty million, one hundred thirty-eight thousand, two hundred twelve".