1361858 has 4 divisors (see below), whose sum is σ = 2042790. Its totient is φ = 680928.

The previous prime is 1361849. The next prime is 1361879. The reversal of 1361858 is 8581631.

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

It can be written as a sum of positive squares in only one way, i.e., 779689 + 582169 = 883^2 + 763^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340463 + ... + 340466.

2^1361858 is an apocalyptic number.

1361858 is a deficient number, since it is larger than the sum of its proper divisors (680932).

1361858 is an equidigital number, since it uses as much as digits as its factorization.

1361858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680931.

The product of its digits is 5760, while the sum is 32.

The square root of 1361858 is about 1166.9867180050. The cubic root of 1361858 is about 110.8435965144.

The spelling of 1361858 in words is "one million, three hundred sixty-one thousand, eight hundred fifty-eight".