3855653140 has 12 divisors (see below), whose sum is σ = 8096871636. Its totient is φ = 1542261248.

The previous prime is 3855653119. The next prime is 3855653143. The reversal of 3855653140 is 413565583.

It can be written as a sum of positive squares in 2 ways, for example, as 719205124 + 3136448016 = 26818^2 + 56004^2 .

It is a super-2 number, since 2×3855653140² = 29732122271983719200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3855653093 and 3855653102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855653143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96391309 + ... + 96391348.

It is an arithmetic number, because the mean of its divisors is an integer number (674739303).

Almost surely, 2^3855653140 is an apocalyptic number.

It is an amenable number.

3855653140 is an abundant number, since it is smaller than the sum of its proper divisors (4241218496).

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

3855653140 is a wasteful number, since it uses less digits than its factorization.

3855653140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192782666 (or 192782664 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 3855653140 is about 62093.9058201366. The cubic root of 3855653140 is about 1568.0719485979.

The spelling of 3855653140 in words is "three billion, eight hundred fifty-five million, six hundred fifty-three thousand, one hundred forty".