381340909125 has 64 divisors (see below), whose sum is σ = 769153132800. Its totient is φ = 184892544000.

The previous prime is 381340909091. The next prime is 381340909127. The reversal of 381340909125 is 521909043183.

It is a happy number.

It is not a de Polignac number, because 381340909125 - 2¹⁰ = 381340908101 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381340909127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5098780 + ... + 5173029.

It is an arithmetic number, because the mean of its divisors is an integer number (12018017700).

Almost surely, 2^381340909125 is an apocalyptic number.

It is an amenable number.

381340909125 is an abundant number, since it is smaller than the sum of its proper divisors (387812223675).

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

381340909125 is a wasteful number, since it uses less digits than its factorization.

381340909125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271844 (or 10271828 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 381340909125 in words is "three hundred eighty-one billion, three hundred forty million, nine hundred nine thousand, one hundred twenty-five".