7478929643 has 4 divisors (see below), whose sum is σ = 7581380808. Its totient is φ = 7376478480.

The previous prime is 7478929631. The next prime is 7478929649. The reversal of 7478929643 is 3469298747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3469298747 = 37 ⋅93764831.

It is a cyclic number.

It is not a de Polignac number, because 7478929643 - 2⁸ = 7478929387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7478929649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51225473 + ... + 51225618.

It is an arithmetic number, because the mean of its divisors is an integer number (1895345202).

Almost surely, 2^7478929643 is an apocalyptic number.

7478929643 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

7478929643 is a deficient number, since it is larger than the sum of its proper divisors (102451165).

7478929643 is a wasteful number, since it uses less digits than its factorization.

7478929643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102451164.

The product of its digits is 18289152, while the sum is 59.

The square root of 7478929643 is about 86480.8050552260. The cubic root of 7478929643 is about 1955.5990422285.

The spelling of 7478929643 in words is "seven billion, four hundred seventy-eight million, nine hundred twenty-nine thousand, six hundred forty-three".