7936452381 has 64 divisors (see below), whose sum is σ = 13323663360. Its totient is φ = 4131959040.

The previous prime is 7936452373. The next prime is 7936452421. The reversal of 7936452381 is 1832546397.

It is not a de Polignac number, because 7936452381 - 2³ = 7936452373 is a prime.

It is a super-2 number, since 2×7936452381² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7936452381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7936452311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354210 + ... + 375948.

It is an arithmetic number, because the mean of its divisors is an integer number (208182240).

Almost surely, 2^7936452381 is an apocalyptic number.

It is an amenable number.

7936452381 is a deficient number, since it is larger than the sum of its proper divisors (5387210979).

7936452381 is a wasteful number, since it uses less digits than its factorization.

7936452381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21826.

The product of its digits is 1088640, while the sum is 48.

The square root of 7936452381 is about 89086.7688324142. The cubic root of 7936452381 is about 1994.6902810002.

The spelling of 7936452381 in words is "seven billion, nine hundred thirty-six million, four hundred fifty-two thousand, three hundred eighty-one".