164648140 has 24 divisors (see below), whose sum is σ = 346666320. Its totient is φ = 65686848.

The previous prime is 164648137. The next prime is 164648147. The reversal of 164648140 is 41846461.

It is a junction number, because it is equal to n+sod(n) for n = 164648096 and 164648105.

It is not an unprimeable number, because it can be changed into a prime (164648147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2802 + ... + 18361.

It is an arithmetic number, because the mean of its divisors is an integer number (14444430).

Almost surely, 2^164648140 is an apocalyptic number.

164648140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164648140 is an abundant number, since it is smaller than the sum of its proper divisors (182018180).

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

164648140 is a wasteful number, since it uses less digits than its factorization.

164648140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561 (or 21559 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 164648140 is about 12831.5291372463. The cubic root of 164648140 is about 548.0905022176.

The spelling of 164648140 in words is "one hundred sixty-four million, six hundred forty-eight thousand, one hundred forty".