7936921541 has 8 divisors (see below), whose sum is σ = 8174538264. Its totient is φ = 7700520960.

The previous prime is 7936921511. The next prime is 7936921549. The reversal of 7936921541 is 1451296397.

It can be written as a sum of positive squares in 4 ways, for example, as 4541412100 + 3395509441 = 67390^2 + 58271^2 .

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 7936921541 - 2²⁶ = 7869812677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7936921549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290780 + ... + 316901.

It is an arithmetic number, because the mean of its divisors is an integer number (1021817283).

Almost surely, 2^7936921541 is an apocalyptic number.

It is an amenable number.

7936921541 is a deficient number, since it is larger than the sum of its proper divisors (237616723).

7936921541 is a wasteful number, since it uses less digits than its factorization.

7936921541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608071.

The product of its digits is 408240, while the sum is 47.

The square root of 7936921541 is about 89089.4019566862. The cubic root of 7936921541 is about 1994.7295853143.

The spelling of 7936921541 in words is "seven billion, nine hundred thirty-six million, nine hundred twenty-one thousand, five hundred forty-one".