3685791285 has 144 divisors (see below), whose sum is σ = 7718256000. Its totient is φ = 1618341120.

The previous prime is 3685791281. The next prime is 3685791313. The reversal of 3685791285 is 5821975863.

3685791285 is a `hidden beast` number, since 3 + 68 + 579 + 1 + 2 + 8 + 5 = 666.

It is not a de Polignac number, because 3685791285 - 2² = 3685791281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685791281) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2378691 + ... + 2380239.

It is an arithmetic number, because the mean of its divisors is an integer number (53599000).

Almost surely, 2^3685791285 is an apocalyptic number.

It is an amenable number.

3685791285 is an abundant number, since it is smaller than the sum of its proper divisors (4032464715).

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

3685791285 is a wasteful number, since it uses less digits than its factorization.

3685791285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624 (or 1610 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 3685791285 is about 60710.7180405569. The cubic root of 3685791285 is about 1544.6979835082.

The spelling of 3685791285 in words is "three billion, six hundred eighty-five million, seven hundred ninety-one thousand, two hundred eighty-five".