1361903 has 2 divisors, whose sum is σ = 1361904. Its totient is φ = 1361902.

The previous prime is 1361879. The next prime is 1361911. The reversal of 1361903 is 3091631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1361903 - 2⁶ = 1361839 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680951 + 680952.

It is an arithmetic number, because the mean of its divisors is an integer number (680952).

2^1361903 is an apocalyptic number.

1361903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361903 is an equidigital number, since it uses as much as digits as its factorization.

1361903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1361903 is about 1167.0059982708. The cubic root of 1361903 is about 110.8448173727.

It can be divided in two parts, 13 and 61903, that added together give a palindrome (61916).

The spelling of 1361903 in words is "one million, three hundred sixty-one thousand, nine hundred three".