3857434340 has 48 divisors (see below), whose sum is σ = 8687891520. Its totient is φ = 1434176640.

The previous prime is 3857434327. The next prime is 3857434387. The reversal of 3857434340 is 434347583.

It is a super-2 number, since 2×3857434340² = 29759599374822471200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75626 + ... + 115905.

It is an arithmetic number, because the mean of its divisors is an integer number (180997740).

Almost surely, 2^3857434340 is an apocalyptic number.

It is an amenable number.

3857434340 is an abundant number, since it is smaller than the sum of its proper divisors (4830457180).

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

3857434340 is a wasteful number, since it uses less digits than its factorization.

3857434340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191612 (or 191610 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 41.

The square root of 3857434340 is about 62108.2469564228. The cubic root of 3857434340 is about 1568.3133793544.

The spelling of 3857434340 in words is "three billion, eight hundred fifty-seven million, four hundred thirty-four thousand, three hundred forty".