1387194682 has 4 divisors (see below), whose sum is σ = 2080792026. Its totient is φ = 693597340.

The previous prime is 1387194661. The next prime is 1387194719. The reversal of 1387194682 is 2864917831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1369814121 + 17380561 = 37011^2 + 4169^2 .

It is a super-2 number, since 2×1387194682² = 3848618171538162248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346798669 + ... + 346798672.

Almost surely, 2^1387194682 is an apocalyptic number.

1387194682 is a deficient number, since it is larger than the sum of its proper divisors (693597344).

1387194682 is an equidigital number, since it uses as much as digits as its factorization.

1387194682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693597343.

The product of its digits is 580608, while the sum is 49.

The square root of 1387194682 is about 37245.0625184064. The cubic root of 1387194682 is about 1115.2677357151.

The spelling of 1387194682 in words is "one billion, three hundred eighty-seven million, one hundred ninety-four thousand, six hundred eighty-two".