163216250 has 40 divisors (see below), whose sum is σ = 314290020. Its totient is φ = 63504000.

The previous prime is 163216241. The next prime is 163216259. The reversal of 163216250 is 52612361.

It is an interprime number because it is at equal distance from previous prime (163216241) and next prime (163216259).

It can be written as a sum of positive squares in 10 ways, for example, as 13667809 + 149548441 = 3697^2 + 12229^2 .

It is not an unprimeable number, because it can be changed into a prime (163216259) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44486 + ... + 48014.

Almost surely, 2^163216250 is an apocalyptic number.

163216250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163216250 is a deficient number, since it is larger than the sum of its proper divisors (151073770).

163216250 is an equidigital number, since it uses as much as digits as its factorization.

163216250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 163216250 is about 12775.6115313514. The cubic root of 163216250 is about 546.4970204475.

The spelling of 163216250 in words is "one hundred sixty-three million, two hundred sixteen thousand, two hundred fifty".