3922541820 has 72 divisors (see below), whose sum is σ = 12041776656. Its totient is φ = 1033404672.

The previous prime is 3922541809. The next prime is 3922541863. The reversal of 3922541820 is 281452293.

It is a happy number.

3922541820 is a `hidden beast` number, since 3 + 92 + 2 + 541 + 8 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 116337 + ... + 146216.

It is an arithmetic number, because the mean of its divisors is an integer number (167246898).

Almost surely, 2^3922541820 is an apocalyptic number.

3922541820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3922541820 is an abundant number, since it is smaller than the sum of its proper divisors (8119234836).

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

3922541820 is a wasteful number, since it uses less digits than its factorization.

3922541820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262651 (or 262646 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3922541820 is about 62630.1989458759. The cubic root of 3922541820 is about 1577.0877589138.

The spelling of 3922541820 in words is "three billion, nine hundred twenty-two million, five hundred forty-one thousand, eight hundred twenty".