3793611681 has 6 divisors (see below), whose sum is σ = 5479661330. Its totient is φ = 2529074448.

The previous prime is 3793611671. The next prime is 3793611683. The reversal of 3793611681 is 1861163973.

It can be written as a sum of positive squares in only one way, i.e., 2819610000 + 974001681 = 53100^2 + 31209^2 .

It is not a de Polignac number, because 3793611681 - 2⁶ = 3793611617 is a prime.

It is a super-5 number, since 5×3793611681⁵ (a number of 49 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3793611683) 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 5 ways as a sum of consecutive naturals, for example, 210756196 + ... + 210756213.

Almost surely, 2^3793611681 is an apocalyptic number.

It is an amenable number.

3793611681 is a deficient number, since it is larger than the sum of its proper divisors (1686049649).

3793611681 is a wasteful number, since it uses less digits than its factorization.

3793611681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421512415 (or 421512412 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 3793611681 is about 61592.3021245350. The cubic root of 3793611681 is about 1559.6157941900.

The spelling of 3793611681 in words is "three billion, seven hundred ninety-three million, six hundred eleven thousand, six hundred eighty-one".