3894622920 has 96 divisors (see below), whose sum is σ = 12680436600. Its totient is φ = 1036686336.

The previous prime is 3894622909. The next prime is 3894622931. The reversal of 3894622920 is 292264983.

3894622920 is a `hidden beast` number, since 389 + 46 + 229 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3894622909) and next prime (3894622931).

It can be written as a sum of positive squares in 4 ways, for example, as 1015441956 + 2879180964 = 31866^2 + 53658^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195334 + ... + 214346.

Almost surely, 2^3894622920 is an apocalyptic number.

3894622920 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 3894622920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6340218300).

3894622920 is an abundant number, since it is smaller than the sum of its proper divisors (8785813680).

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

3894622920 is a wasteful number, since it uses less digits than its factorization.

3894622920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19599 (or 19592 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 3894622920 is about 62406.9140400325. The cubic root of 3894622920 is about 1573.3371778051.

The spelling of 3894622920 in words is "three billion, eight hundred ninety-four million, six hundred twenty-two thousand, nine hundred twenty".