164215470 has 16 divisors (see below), whose sum is σ = 394117200. Its totient is φ = 43790784.

The previous prime is 164215453. The next prime is 164215501. The reversal of 164215470 is 74512461.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 5473849 = 164215470 / (1 + 6 + 4 + 2 + 1 + 5 + 4 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2736895 + ... + 2736954.

It is an arithmetic number, because the mean of its divisors is an integer number (24632325).

Almost surely, 2^164215470 is an apocalyptic number.

164215470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164215470 is an abundant number, since it is smaller than the sum of its proper divisors (229901730).

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

164215470 is a wasteful number, since it uses less digits than its factorization.

164215470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473859.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 164215470 is about 12814.6584035627. The cubic root of 164215470 is about 547.6099818669.

The spelling of 164215470 in words is "one hundred sixty-four million, two hundred fifteen thousand, four hundred seventy".