6936541821 has 24 divisors (see below), whose sum is σ = 10945456704. Its totient is φ = 4198138560.

The previous prime is 6936541817. The next prime is 6936541837. The reversal of 6936541821 is 1281456396.

It is not a de Polignac number, because 6936541821 - 2² = 6936541817 is a prime.

It is a super-2 number, since 2×6936541821² = 96231224868963992082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6936541621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23785 + ... + 120161.

It is an arithmetic number, because the mean of its divisors is an integer number (456060696).

Almost surely, 2^6936541821 is an apocalyptic number.

It is an amenable number.

6936541821 is a deficient number, since it is larger than the sum of its proper divisors (4008914883).

6936541821 is a wasteful number, since it uses less digits than its factorization.

6936541821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97121 (or 97118 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 6936541821 is about 83285.9040954710. The cubic root of 6936541821 is about 1907.1330965817.

The spelling of 6936541821 in words is "six billion, nine hundred thirty-six million, five hundred forty-one thousand, eight hundred twenty-one".