381034145 has 4 divisors (see below), whose sum is σ = 457240980. Its totient is φ = 304827312.

The previous prime is 381034091. The next prime is 381034229. The reversal of 381034145 is 541430183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42915601 + 338118544 = 6551^2 + 18388^2 .

It is a cyclic number.

It is not a de Polignac number, because 381034145 - 2⁶ = 381034081 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38103410 + ... + 38103419.

It is an arithmetic number, because the mean of its divisors is an integer number (114310245).

Almost surely, 2^381034145 is an apocalyptic number.

It is an amenable number.

381034145 is a deficient number, since it is larger than the sum of its proper divisors (76206835).

381034145 is an equidigital number, since it uses as much as digits as its factorization.

381034145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76206834.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 381034145 is about 19520.0959270184. The cubic root of 381034145 is about 724.9721083206.

The spelling of 381034145 in words is "three hundred eighty-one million, thirty-four thousand, one hundred forty-five".