1208647387 has 8 divisors (see below), whose sum is σ = 1217232000. Its totient is φ = 1200074304.

The previous prime is 1208647367. The next prime is 1208647393. The reversal of 1208647387 is 7837468021.

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 1208647387 - 2¹⁵ = 1208614619 is a prime.

It is a super-2 number, since 2×1208647387² = 2921657012203855538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208647327) 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, 375039 + ... + 378247.

It is an arithmetic number, because the mean of its divisors is an integer number (152154000).

Almost surely, 2^1208647387 is an apocalyptic number.

1208647387 is a deficient number, since it is larger than the sum of its proper divisors (8584613).

1208647387 is a wasteful number, since it uses less digits than its factorization.

1208647387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 1208647387 is about 34765.6063804445. The cubic root of 1208647387 is about 1065.2050233099.

The spelling of 1208647387 in words is "one billion, two hundred eight million, six hundred forty-seven thousand, three hundred eighty-seven".