1387228207 has 8 divisors (see below), whose sum is σ = 1436562560. Its totient is φ = 1338180480.

The previous prime is 1387228189. The next prime is 1387228217. The reversal of 1387228207 is 7028227831.

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

It is a cyclic number.

It is not a de Polignac number, because 1387228207 - 2¹⁹ = 1386703919 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1387228207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387228217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61782 + ... + 81187.

It is an arithmetic number, because the mean of its divisors is an integer number (179570320).

Almost surely, 2^1387228207 is an apocalyptic number.

1387228207 is a deficient number, since it is larger than the sum of its proper divisors (49334353).

1387228207 is a wasteful number, since it uses less digits than its factorization.

1387228207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143313.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 1387228207 is about 37245.5125753425. The cubic root of 1387228207 is about 1115.2767200463.

The spelling of 1387228207 in words is "one billion, three hundred eighty-seven million, two hundred twenty-eight thousand, two hundred seven".