3857850040 has 32 divisors (see below), whose sum is σ = 9469269360. Its totient is φ = 1402854400.

The previous prime is 3857849987. The next prime is 3857850067. The reversal of 3857850040 is 400587583.

It is a super-2 number, since 2×3857850040² = 29766013862256003200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3857849975 and 3857850002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4383481 + ... + 4384360.

Almost surely, 2^3857850040 is an apocalyptic number.

It is an amenable number.

3857850040 is an abundant number, since it is smaller than the sum of its proper divisors (5611419320).

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

3857850040 is a wasteful number, since it uses less digits than its factorization.

3857850040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8767863 (or 8767859 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 3857850040 is about 62111.5934427704. The cubic root of 3857850040 is about 1568.3697142475.

The spelling of 3857850040 in words is "three billion, eight hundred fifty-seven million, eight hundred fifty thousand, forty".