3811874640 has 480 divisors, whose sum is σ = 15205812480. Its totient is φ = 783433728.

The previous prime is 3811874609. The next prime is 3811874659. The reversal of 3811874640 is 464781183.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 3811874592 and 3811874601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4597746 + ... + 4598574.

It is an arithmetic number, because the mean of its divisors is an integer number (31678776).

Almost surely, 2^3811874640 is an apocalyptic number.

3811874640 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 3811874640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7602906240).

3811874640 is an abundant number, since it is smaller than the sum of its proper divisors (11393937840).

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

3811874640 is a wasteful number, since it uses less digits than its factorization.

3811874640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 3811874640 is about 61740.3809512057. The cubic root of 3811874640 is about 1562.1145224230.

The spelling of 3811874640 in words is "three billion, eight hundred eleven million, eight hundred seventy-four thousand, six hundred forty".