1655478403 has 2 divisors, whose sum is σ = 1655478404. Its totient is φ = 1655478402.

The previous prime is 1655478353. The next prime is 1655478431. The reversal of 1655478403 is 3048745561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1655478403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1655478403.

It is not a weakly prime, because it can be changed into another prime (1655478203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827739201 + 827739202.

It is an arithmetic number, because the mean of its divisors is an integer number (827739202).

Almost surely, 2^1655478403 is an apocalyptic number.

1655478403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655478403 is an equidigital number, since it uses as much as digits as its factorization.

1655478403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 1655478403 is about 40687.5706205224. The cubic root of 1655478403 is about 1182.9721120208.

The spelling of 1655478403 in words is "one billion, six hundred fifty-five million, four hundred seventy-eight thousand, four hundred three".