1663425430 has 8 divisors (see below), whose sum is σ = 2994165792. Its totient is φ = 665370168.

The previous prime is 1663425403. The next prime is 1663425431. The reversal of 1663425430 is 345243661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1663425430² = 5533968322341369800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663425431) 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 3 ways as a sum of consecutive naturals, for example, 83171262 + ... + 83171281.

It is an arithmetic number, because the mean of its divisors is an integer number (374270724).

Almost surely, 2^1663425430 is an apocalyptic number.

1663425430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663425430 is a deficient number, since it is larger than the sum of its proper divisors (1330740362).

1663425430 is a wasteful number, since it uses less digits than its factorization.

1663425430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166342550.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1663425430 is about 40785.1128477046. The cubic root of 1663425430 is about 1184.8620205265.

The spelling of 1663425430 in words is "one billion, six hundred sixty-three million, four hundred twenty-five thousand, four hundred thirty".