1361811 has 16 divisors (see below), whose sum is σ = 2050560. Its totient is φ = 796320.

The previous prime is 1361809. The next prime is 1361813. The reversal of 1361811 is 1181631.

It is an interprime number because it is at equal distance from previous prime (1361809) and next prime (1361813).

It is not a de Polignac number, because 1361811 - 2¹ = 1361809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246 + ... + 1668.

It is an arithmetic number, because the mean of its divisors is an integer number (128160).

2^1361811 is an apocalyptic number.

1361811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1361811 is a deficient number, since it is larger than the sum of its proper divisors (688749).

1361811 is a wasteful number, since it uses less digits than its factorization.

1361811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466.

The product of its digits is 144, while the sum is 21.

The square root of 1361811 is about 1166.9665804983. The cubic root of 1361811 is about 110.8423213671.

The spelling of 1361811 in words is "one million, three hundred sixty-one thousand, eight hundred eleven".