3685020912 has 160 divisors (see below), whose sum is σ = 11277135360. Its totient is φ = 1148083200.

The previous prime is 3685020901. The next prime is 3685020917. The reversal of 3685020912 is 2190205863.

3685020912 is a `hidden beast` number, since 3 + 68 + 502 + 0 + 91 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685020917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107283 + ... + 1110605.

It is an arithmetic number, because the mean of its divisors is an integer number (70482096).

Almost surely, 2^3685020912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3685020912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5638567680).

3685020912 is an abundant number, since it is smaller than the sum of its proper divisors (7592114448).

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

3685020912 is a wasteful number, since it uses less digits than its factorization.

3685020912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 3496 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 3685020912 is about 60704.3730879415. The cubic root of 3685020912 is about 1544.5903560957.

The spelling of 3685020912 in words is "three billion, six hundred eighty-five million, twenty thousand, nine hundred twelve".