1387663226 has 8 divisors (see below), whose sum is σ = 2081853684. Its totient is φ = 693712000.

The previous prime is 1387663217. The next prime is 1387663237. The reversal of 1387663226 is 6223667831.

It can be written as a sum of positive squares in 2 ways, for example, as 1350636001 + 37027225 = 36751^2 + 6085^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 44525 + ... + 68976.

Almost surely, 2^1387663226 is an apocalyptic number.

1387663226 is a deficient number, since it is larger than the sum of its proper divisors (694190458).

1387663226 is a wasteful number, since it uses less digits than its factorization.

1387663226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119616.

The product of its digits is 435456, while the sum is 44.

The square root of 1387663226 is about 37251.3520023099. The cubic root of 1387663226 is about 1115.3932872306.

The spelling of 1387663226 in words is "one billion, three hundred eighty-seven million, six hundred sixty-three thousand, two hundred twenty-six".