3685181040 has 60 divisors (see below), whose sum is σ = 12376068744. Its totient is φ = 982714752.

The previous prime is 3685181033. The next prime is 3685181047. The reversal of 3685181040 is 401815863.

3685181040 is a `hidden beast` number, since 36 + 8 + 518 + 104 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3685181033) and next prime (3685181047).

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3685180986 and 3685181004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685181047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2558434 + ... + 2559873.

Almost surely, 2^3685181040 is an apocalyptic number.

3685181040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3685181040 is an abundant number, since it is smaller than the sum of its proper divisors (8690887704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3685181040 is a wasteful number, since it uses less digits than its factorization.

3685181040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118326 (or 5118317 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 3685181040 is about 60705.6919901256. The cubic root of 3685181040 is about 1544.6127285225.

The spelling of 3685181040 in words is "three billion, six hundred eighty-five million, one hundred eighty-one thousand, forty".