3907861920 has 144 divisors (see below), whose sum is σ = 13915504512. Its totient is φ = 996779520.

The previous prime is 3907861913. The next prime is 3907861931. The reversal of 3907861920 is 291687093.

3907861920 is a `hidden beast` number, since 3 + 9 + 0 + 7 + 8 + 619 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25876 + ... + 92115.

It is an arithmetic number, because the mean of its divisors is an integer number (96635448).

Almost surely, 2^3907861920 is an apocalyptic number.

3907861920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3907861920 is an abundant number, since it is smaller than the sum of its proper divisors (10007642592).

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

3907861920 is a wasteful number, since it uses less digits than its factorization.

3907861920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118035 (or 118024 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 3907861920 is about 62512.8940299519. The cubic root of 3907861920 is about 1575.1179110515.

The spelling of 3907861920 in words is "three billion, nine hundred seven million, eight hundred sixty-one thousand, nine hundred twenty".