3850947038689 has 27 divisors (see below), whose sum is σ = 4128224570617. Its totient is φ = 3591945843200.

The previous prime is 3850947038657. The next prime is 3850947038707. The reversal of 3850947038689 is 9868307490583.

The square root of 3850947038689 is 1962383.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1546623038689 + 2304324000000 = 1243633^2 + 1518000^2 .

It is not a de Polignac number, because 3850947038689 - 2⁵ = 3850947038657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3850947078689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1850526129 + ... + 1850528209.

Almost surely, 2^{3850947038689} is an apocalyptic number.

3850947038689 is the 1962383-rd square number.

3850947038689 is the 981192-nd centered octagonal number.

It is an amenable number.

3850947038689 is a deficient number, since it is larger than the sum of its proper divisors (277277531928).

3850947038689 is an frugal number, since it uses more digits than its factorization.

3850947038689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 70.

The spelling of 3850947038689 in words is "three trillion, eight hundred fifty billion, nine hundred forty-seven million, thirty-eight thousand, six hundred eighty-nine".