1663543070 has 16 divisors (see below), whose sum is σ = 3422145888. Its totient is φ = 570357600.

The previous prime is 1663543069. The next prime is 1663543097. The reversal of 1663543070 is 703453661.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1663543070.

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 7 ways as a sum of consecutive naturals, for example, 11882381 + ... + 11882520.

It is an arithmetic number, because the mean of its divisors is an integer number (213884118).

Almost surely, 2^1663543070 is an apocalyptic number.

1663543070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663543070 is an abundant number, since it is smaller than the sum of its proper divisors (1758602818).

1663543070 is a wasteful number, since it uses less digits than its factorization.

1663543070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23764915.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 1663543070 is about 40786.5550151027. Note that the first 3 decimals coincide. The cubic root of 1663543070 is about 1184.8899516217.

The spelling of 1663543070 in words is "one billion, six hundred sixty-three million, five hundred forty-three thousand, seventy".