1403655655 has 4 divisors (see below), whose sum is σ = 1684386792. Its totient is φ = 1122924520.

The previous prime is 1403655641. The next prime is 1403655691. The reversal of 1403655655 is 5565563041.

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

It is not a de Polignac number, because 1403655655 - 2¹⁵ = 1403622887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140365561 + ... + 140365570.

It is an arithmetic number, because the mean of its divisors is an integer number (421096698).

Almost surely, 2^1403655655 is an apocalyptic number.

1403655655 is a deficient number, since it is larger than the sum of its proper divisors (280731137).

1403655655 is an equidigital number, since it uses as much as digits as its factorization.

1403655655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280731136.

The product of its (nonzero) digits is 270000, while the sum is 40.

The square root of 1403655655 is about 37465.3927645234. The cubic root of 1403655655 is about 1119.6617960022.

The spelling of 1403655655 in words is "one billion, four hundred three million, six hundred fifty-five thousand, six hundred fifty-five".