3857740920 has 96 divisors (see below), whose sum is σ = 13677459120. Its totient is φ = 935208960.

The previous prime is 3857740919. The next prime is 3857740927. The reversal of 3857740920 is 290477583.

3857740920 is a `hidden beast` number, since 38 + 577 + 40 + 9 + 2 + 0 = 666.

It is a super-3 number, since 3×3857740920³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3857740927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483129 + ... + 491048.

Almost surely, 2^3857740920 is an apocalyptic number.

3857740920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3857740920 is an abundant number, since it is smaller than the sum of its proper divisors (9819718200).

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

3857740920 is a wasteful number, since it uses less digits than its factorization.

3857740920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974205 (or 974198 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 3857740920 is about 62110.7150176199. The cubic root of 3857740920 is about 1568.3549268992.

It can be divided in two parts, 38577 and 40920, that added together give a palindrome (79497).

The spelling of 3857740920 in words is "three billion, eight hundred fifty-seven million, seven hundred forty thousand, nine hundred twenty".