3928955693285 has 32 divisors (see below), whose sum is σ = 5562451064832. Its totient is φ = 2607067607040.

The previous prime is 3928955693263. The next prime is 3928955693353. The reversal of 3928955693285 is 5823965598293.

It is not a de Polignac number, because 3928955693285 - 2³² = 3924660725989 is a prime.

It is a super-2 number, since 2×3928955693285² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18330857 + ... + 18543953.

It is an arithmetic number, because the mean of its divisors is an integer number (173826595776).

Almost surely, 2^{3928955693285} is an apocalyptic number.

3928955693285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3928955693285 is a deficient number, since it is larger than the sum of its proper divisors (1633495371547).

3928955693285 is a wasteful number, since it uses less digits than its factorization.

3928955693285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230133.

The product of its digits is 1259712000, while the sum is 74.

The spelling of 3928955693285 in words is "three trillion, nine hundred twenty-eight billion, nine hundred fifty-five million, six hundred ninety-three thousand, two hundred eighty-five".