381458 has 16 divisors (see below), whose sum is σ = 713664. Its totient is φ = 148560.

The previous prime is 381443. The next prime is 381461. The reversal of 381458 is 854183.

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

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 381458.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1085 + ... + 1392.

It is an arithmetic number, because the mean of its divisors is an integer number (44604).

2³⁸¹⁴⁵⁸ is an apocalyptic number.

381458 is a deficient number, since it is larger than the sum of its proper divisors (332206).

381458 is a wasteful number, since it uses less digits than its factorization.

381458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497.

The product of its digits is 3840, while the sum is 29.

The square root of 381458 is about 617.6228622711. The cubic root of 381458 is about 72.5240823683.

The spelling of 381458 in words is "three hundred eighty-one thousand, four hundred fifty-eight".