3873649920 has 576 divisors, whose sum is σ = 15364339200. Its totient is φ = 828506112.

The previous prime is 3873649907. The next prime is 3873649933. The reversal of 3873649920 is 299463783.

It is an interprime number because it is at equal distance from previous prime (3873649907) and next prime (3873649933).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22390954 + ... + 22391126.

It is an arithmetic number, because the mean of its divisors is an integer number (26674200).

Almost surely, 2^3873649920 is an apocalyptic number.

3873649920 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 3873649920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7682169600).

3873649920 is an abundant number, since it is smaller than the sum of its proper divisors (11490689280).

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

3873649920 is a wasteful number, since it uses less digits than its factorization.

3873649920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 3873649920 is about 62238.6529417210. The cubic root of 3873649920 is about 1570.5078914502.

The spelling of 3873649920 in words is "three billion, eight hundred seventy-three million, six hundred forty-nine thousand, nine hundred twenty".