1361985 has 32 divisors (see below), whose sum is σ = 2350080. Its totient is φ = 672000.

The previous prime is 1361963. The next prime is 1361999. The reversal of 1361985 is 5891631.

It is not a de Polignac number, because 1361985 - 2⁵ = 1361953 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 13435 + ... + 13535.

It is an arithmetic number, because the mean of its divisors is an integer number (73440).

2^1361985 is an apocalyptic number.

1361985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361985 is a deficient number, since it is larger than the sum of its proper divisors (988095).

1361985 is a wasteful number, since it uses less digits than its factorization.

1361985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 6480, while the sum is 33.

The square root of 1361985 is about 1167.0411303806. The cubic root of 1361985 is about 110.8470419787.

It can be divided in two parts, 1361 and 985, that added together give a triangular number (2346 = T₆₈).

The spelling of 1361985 in words is "one million, three hundred sixty-one thousand, nine hundred eighty-five".