1361819 has 4 divisors (see below), whose sum is σ = 1441944. Its totient is φ = 1281696.

The previous prime is 1361813. The next prime is 1361827. The reversal of 1361819 is 9181631.

It is a happy number.

1361819 is nontrivially palindromic in base 9.

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

It is a cyclic number.

It is not a de Polignac number, because 1361819 - 2⁴ = 1361803 is a prime.

It is a super-2 number, since 2×1361819² = 3709101977522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1361791 and 1361800.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40037 + ... + 40070.

It is an arithmetic number, because the mean of its divisors is an integer number (360486).

2^1361819 is an apocalyptic number.

1361819 is a deficient number, since it is larger than the sum of its proper divisors (80125).

1361819 is an equidigital number, since it uses as much as digits as its factorization.

1361819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80124.

The product of its digits is 1296, while the sum is 29.

The square root of 1361819 is about 1166.9700081836. The cubic root of 1361819 is about 110.8425384155.

The spelling of 1361819 in words is "one million, three hundred sixty-one thousand, eight hundred nineteen".