1361660903 has 4 divisors (see below), whose sum is σ = 1361825088. Its totient is φ = 1361496720.

The previous prime is 1361660887. The next prime is 1361660953. The reversal of 1361660903 is 3090661631.

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 1361660903 - 2⁴ = 1361660887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361660953) 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, 68951 + ... + 86472.

It is an arithmetic number, because the mean of its divisors is an integer number (340456272).

Almost surely, 2^1361660903 is an apocalyptic number.

1361660903 is a deficient number, since it is larger than the sum of its proper divisors (164185).

1361660903 is an equidigital number, since it uses as much as digits as its factorization.

1361660903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164184.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 1361660903 is about 36900.6897361011. The cubic root of 1361660903 is about 1108.3824891962.

The spelling of 1361660903 in words is "one billion, three hundred sixty-one million, six hundred sixty thousand, nine hundred three".