1544420163 has 24 divisors (see below), whose sum is σ = 2437566544. Its totient is φ = 864008640.

The previous prime is 1544420153. The next prime is 1544420179. The reversal of 1544420163 is 3610244451.

It is not a de Polignac number, because 1544420163 - 2⁹ = 1544419651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1544420163.

It is not an unprimeable number, because it can be changed into a prime (1544420153) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 158920 + ... + 168357.

Almost surely, 2^1544420163 is an apocalyptic number.

1544420163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1544420163 is a deficient number, since it is larger than the sum of its proper divisors (893146381).

1544420163 is a wasteful number, since it uses less digits than its factorization.

1544420163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327315 (or 327304 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1544420163 is about 39299.1114785055. Note that the first 3 decimals coincide. The cubic root of 1544420163 is about 1155.9041446503.

The spelling of 1544420163 in words is "one billion, five hundred forty-four million, four hundred twenty thousand, one hundred sixty-three".