3685813890 has 64 divisors (see below), whose sum is σ = 9657885312. Its totient is φ = 892812800.

The previous prime is 3685813889. The next prime is 3685813897. The reversal of 3685813890 is 983185863.

It is not an unprimeable number, because it can be changed into a prime (3685813897) 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, 488950 + ... + 496430.

It is an arithmetic number, because the mean of its divisors is an integer number (150904458).

Almost surely, 2^3685813890 is an apocalyptic number.

3685813890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3685813890 is an abundant number, since it is smaller than the sum of its proper divisors (5972071422).

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

3685813890 is a wasteful number, since it uses less digits than its factorization.

3685813890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8995.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The square root of 3685813890 is about 60710.9042100346. The cubic root of 3685813890 is about 1544.7011413852.

The spelling of 3685813890 in words is "three billion, six hundred eighty-five million, eight hundred thirteen thousand, eight hundred ninety".