3928662243 has 180 divisors, whose sum is σ = 7312015480. Its totient is φ = 2093921280.

The previous prime is 3928662233. The next prime is 3928662263. The reversal of 3928662243 is 3422668293.

It is a happy number.

It is not a de Polignac number, because 3928662243 - 2¹² = 3928658147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928662203) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 53817255 + ... + 53817327.

Almost surely, 2^3928662243 is an apocalyptic number.

3928662243 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3928662243 is a deficient number, since it is larger than the sum of its proper divisors (3383353237).

3928662243 is a wasteful number, since it uses less digits than its factorization.

3928662243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 123 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 3928662243 is about 62679.0414971384. The cubic root of 3928662243 is about 1577.9075868621.

The spelling of 3928662243 in words is "three billion, nine hundred twenty-eight million, six hundred sixty-two thousand, two hundred forty-three".