1380195506 has 8 divisors (see below), whose sum is σ = 2070459804. Its totient is φ = 690042240.

The previous prime is 1380195503. The next prime is 1380195517. The reversal of 1380195506 is 6055910831.

It can be written as a sum of positive squares in 2 ways, for example, as 1282284481 + 97911025 = 35809^2 + 9895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1380195506.

It is not an unprimeable number, because it can be changed into a prime (1380195503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19226 + ... + 55946.

Almost surely, 2^1380195506 is an apocalyptic number.

1380195506 is a deficient number, since it is larger than the sum of its proper divisors (690264298).

1380195506 is a wasteful number, since it uses less digits than its factorization.

1380195506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55516.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 1380195506 is about 37150.9825711245. The cubic root of 1380195506 is about 1113.3888548651.

The spelling of 1380195506 in words is "one billion, three hundred eighty million, one hundred ninety-five thousand, five hundred six".