3685421081 has 8 divisors (see below), whose sum is σ = 3892779264. Its totient is φ = 3483592560.

The previous prime is 3685421063. The next prime is 3685421087. The reversal of 3685421081 is 1801245863.

3685421081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685421081 is a prime.

It is a super-2 number, since 2×3685421081² = 27164657088558417122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3685421087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381046 + ... + 1383711.

It is an arithmetic number, because the mean of its divisors is an integer number (486597408).

Almost surely, 2^3685421081 is an apocalyptic number.

3685421081 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3685421081 is a deficient number, since it is larger than the sum of its proper divisors (207358183).

3685421081 is a wasteful number, since it uses less digits than its factorization.

3685421081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764831.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 3685421081 is about 60707.6690460110. The cubic root of 3685421081 is about 1544.6462648518.

The spelling of 3685421081 in words is "three billion, six hundred eighty-five million, four hundred twenty-one thousand, eighty-one".