3928968251 has 8 divisors (see below), whose sum is σ = 4290791904. Its totient is φ = 3575658240.

The previous prime is 3928968233. The next prime is 3928968283. The reversal of 3928968251 is 1528698293.

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 3928968251 - 2⁶ = 3928968187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3928968193 and 3928968202.

It is not an unprimeable number, because it can be changed into a prime (3928968151) 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, 2127446 + ... + 2129291.

It is an arithmetic number, because the mean of its divisors is an integer number (536348988).

Almost surely, 2^3928968251 is an apocalyptic number.

3928968251 is a deficient number, since it is larger than the sum of its proper divisors (361823653).

3928968251 is a wasteful number, since it uses less digits than its factorization.

3928968251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256821.

The product of its digits is 1866240, while the sum is 53.

The square root of 3928968251 is about 62681.4825207573. The cubic root of 3928968251 is about 1577.9485541412.

The spelling of 3928968251 in words is "three billion, nine hundred twenty-eight million, nine hundred sixty-eight thousand, two hundred fifty-one".