3851698028545 has 8 divisors (see below), whose sum is σ = 4667800383720. Its totient is φ = 3050849923200.

The previous prime is 3851698028543. The next prime is 3851698028561. The reversal of 3851698028545 is 5458208961583.

It can be written as a sum of positive squares in 4 ways, for example, as 1900471787776 + 1951226240769 = 1378576^2 + 1396863^2 .

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

It is not a de Polignac number, because 3851698028545 - 2¹ = 3851698028543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3851698028543) 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, 3813561900 + ... + 3813562909.

It is an arithmetic number, because the mean of its divisors is an integer number (583475047965).

Almost surely, 2^{3851698028545} is an apocalyptic number.

It is an amenable number.

3851698028545 is a deficient number, since it is larger than the sum of its proper divisors (816102355175).

3851698028545 is a wasteful number, since it uses less digits than its factorization.

3851698028545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7627124915.

The product of its (nonzero) digits is 82944000, while the sum is 64.

The spelling of 3851698028545 in words is "three trillion, eight hundred fifty-one billion, six hundred ninety-eight million, twenty-eight thousand, five hundred forty-five".