381134870 has 32 divisors (see below), whose sum is σ = 723444480. Its totient is φ = 144171360.

The previous prime is 381134857. The next prime is 381134879. The reversal of 381134870 is 78431183.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 381134870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381134879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129839 + ... + 132741.

It is an arithmetic number, because the mean of its divisors is an integer number (22607640).

Almost surely, 2^381134870 is an apocalyptic number.

381134870 is a deficient number, since it is larger than the sum of its proper divisors (342309610).

381134870 is a wasteful number, since it uses less digits than its factorization.

381134870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 381134870 is about 19522.6757899628. The cubic root of 381134870 is about 725.0359839453.

The spelling of 381134870 in words is "three hundred eighty-one million, one hundred thirty-four thousand, eight hundred seventy".