381636960 has 48 divisors (see below), whose sum is σ = 1202157936. Its totient is φ = 101769728.

The previous prime is 381636949. The next prime is 381636967. The reversal of 381636960 is 69636183.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381636967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397059 + ... + 398018.

It is an arithmetic number, because the mean of its divisors is an integer number (25044957).

Almost surely, 2^381636960 is an apocalyptic number.

381636960 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381636960 is an abundant number, since it is smaller than the sum of its proper divisors (820520976).

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

381636960 is a wasteful number, since it uses less digits than its factorization.

381636960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795095 (or 795087 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 381636960 is about 19535.5307068940. The cubic root of 381636960 is about 725.3542208818.

The spelling of 381636960 in words is "three hundred eighty-one million, six hundred thirty-six thousand, nine hundred sixty".