361858 has 8 divisors (see below), whose sum is σ = 620352. Its totient is φ = 155076.

The previous prime is 361843. The next prime is 361871. The reversal of 361858 is 858163.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12910 + ... + 12937.

It is an arithmetic number, because the mean of its divisors is an integer number (77544).

2³⁶¹⁸⁵⁸ is an apocalyptic number.

361858 is a deficient number, since it is larger than the sum of its proper divisors (258494).

361858 is a wasteful number, since it uses less digits than its factorization.

361858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25856.

The product of its digits is 5760, while the sum is 31.

The square root of 361858 is about 601.5463406921. The cubic root of 361858 is about 71.2600396235.

The spelling of 361858 in words is "three hundred sixty-one thousand, eight hundred fifty-eight".