164978250 has 32 divisors (see below), whose sum is σ = 411787584. Its totient is φ = 43994000.

The previous prime is 164978243. The next prime is 164978257. The reversal of 164978250 is 52879461.

It is an interprime number because it is at equal distance from previous prime (164978243) and next prime (164978257).

It is not an unprimeable number, because it can be changed into a prime (164978257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109236 + ... + 110735.

It is an arithmetic number, because the mean of its divisors is an integer number (12868362).

Almost surely, 2^164978250 is an apocalyptic number.

164978250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164978250 is an abundant number, since it is smaller than the sum of its proper divisors (246809334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164978250 is a wasteful number, since it uses less digits than its factorization.

164978250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219991 (or 219981 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 164978250 is about 12844.3859331616. The cubic root of 164978250 is about 548.4565542767.

The spelling of 164978250 in words is "one hundred sixty-four million, nine hundred seventy-eight thousand, two hundred fifty".