1385750857 has 8 divisors (see below), whose sum is σ = 1395751520. Its totient is φ = 1375768800.

The previous prime is 1385750833. The next prime is 1385750893. The reversal of 1385750857 is 7580575831.

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 1385750857 - 2¹⁹ = 1385226569 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 1385750857.

It is not an unprimeable number, because it can be changed into a prime (1385750557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167269 + ... + 175357.

It is an arithmetic number, because the mean of its divisors is an integer number (174468940).

Almost surely, 2^1385750857 is an apocalyptic number.

It is an amenable number.

1385750857 is a deficient number, since it is larger than the sum of its proper divisors (10000663).

1385750857 is a wasteful number, since it uses less digits than its factorization.

1385750857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9303.

The product of its (nonzero) digits is 1176000, while the sum is 49.

The square root of 1385750857 is about 37225.6747017432. The cubic root of 1385750857 is about 1114.8806690581.

The spelling of 1385750857 in words is "one billion, three hundred eighty-five million, seven hundred fifty thousand, eight hundred fifty-seven".