3894157140 has 96 divisors (see below), whose sum is σ = 11437445376. Its totient is φ = 988078080.

The previous prime is 3894157109. The next prime is 3894157147. The reversal of 3894157140 is 417514983.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3894157092 and 3894157101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3894157147) 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, 259030 + ... + 273650.

It is an arithmetic number, because the mean of its divisors is an integer number (119140056).

Almost surely, 2^3894157140 is an apocalyptic number.

3894157140 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 3894157140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5718722688).

3894157140 is an abundant number, since it is smaller than the sum of its proper divisors (7543288236).

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

3894157140 is a wasteful number, since it uses less digits than its factorization.

3894157140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14849 (or 14847 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 3894157140 is about 62403.1821304010. The cubic root of 3894157140 is about 1573.2744538716.

The spelling of 3894157140 in words is "three billion, eight hundred ninety-four million, one hundred fifty-seven thousand, one hundred forty".