3891134140 has 12 divisors (see below), whose sum is σ = 8171381736. Its totient is φ = 1556453648.

The previous prime is 3891134101. The next prime is 3891134141. The reversal of 3891134140 is 414311983.

It is a junction number, because it is equal to n+sod(n) for n = 3891134096 and 3891134105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891134141) 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, 97278334 + ... + 97278373.

It is an arithmetic number, because the mean of its divisors is an integer number (680948478).

Almost surely, 2^3891134140 is an apocalyptic number.

It is an amenable number.

3891134140 is an abundant number, since it is smaller than the sum of its proper divisors (4280247596).

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

3891134140 is a wasteful number, since it uses less digits than its factorization.

3891134140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194556716 (or 194556714 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 3891134140 is about 62378.9559066197. The cubic root of 3891134140 is about 1572.8672420997.

The spelling of 3891134140 in words is "three billion, eight hundred ninety-one million, one hundred thirty-four thousand, one hundred forty".