1661459103 has 6 divisors (see below), whose sum is σ = 2399885384. Its totient is φ = 1107639396.

The previous prime is 1661459087. The next prime is 1661459141. The reversal of 1661459103 is 3019541661.

1661459103 is a `hidden beast` number, since 1 + 6 + 61 + 4 + 591 + 0 + 3 = 666.

It is not a de Polignac number, because 1661459103 - 2⁴ = 1661459087 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 (1661459183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92303275 + ... + 92303292.

Almost surely, 2^1661459103 is an apocalyptic number.

1661459103 is a deficient number, since it is larger than the sum of its proper divisors (738426281).

1661459103 is a wasteful number, since it uses less digits than its factorization.

1661459103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184606573 (or 184606570 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1661459103 is about 40760.9997792007. Note that the first 3 decimals coincide. The cubic root of 1661459103 is about 1184.3949632584.

The spelling of 1661459103 in words is "one billion, six hundred sixty-one million, four hundred fifty-nine thousand, one hundred three".