3671665140 has 144 divisors (see below), whose sum is σ = 12169793664. Its totient is φ = 821610240.

The previous prime is 3671665133. The next prime is 3671665157. The reversal of 3671665140 is 415661763.

It is a super-2 number, since 2×3671665140² = 26962249800582439200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74929 + ... + 113831.

It is an arithmetic number, because the mean of its divisors is an integer number (84512456).

Almost surely, 2^3671665140 is an apocalyptic number.

3671665140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3671665140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6084896832).

3671665140 is an abundant number, since it is smaller than the sum of its proper divisors (8498128524).

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

3671665140 is a wasteful number, since it uses less digits than its factorization.

3671665140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38950 (or 38937 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 3671665140 is about 60594.2665604593. The cubic root of 3671665140 is about 1542.7220564904.

The spelling of 3671665140 in words is "three billion, six hundred seventy-one million, six hundred sixty-five thousand, one hundred forty".