1385332850 has 24 divisors (see below), whose sum is σ = 2810967408. Its totient is φ = 503757200.

The previous prime is 1385332843. The next prime is 1385332853. The reversal of 1385332850 is 582335831.

It is not an unprimeable number, because it can be changed into a prime (1385332853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1258844 + ... + 1259943.

It is an arithmetic number, because the mean of its divisors is an integer number (117123642).

Almost surely, 2^1385332850 is an apocalyptic number.

1385332850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1385332850 is an abundant number, since it is smaller than the sum of its proper divisors (1425634558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385332850 is a wasteful number, since it uses less digits than its factorization.

1385332850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518810 (or 2518805 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1385332850 is about 37220.0597796403. The cubic root of 1385332850 is about 1114.7685578062.

It can be divided in two parts, 138533 and 2850, that multiplied together give a triangular number (394819050 = T₂₈₁₀₀).

The spelling of 1385332850 in words is "one billion, three hundred eighty-five million, three hundred thirty-two thousand, eight hundred fifty".