164405870 has 16 divisors (see below), whose sum is σ = 296190000. Its totient is φ = 65704704.

The previous prime is 164405849. The next prime is 164405887. The reversal of 164405870 is 78504461.

164405870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×164405870³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164405870.

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, 5909 + ... + 19071.

It is an arithmetic number, because the mean of its divisors is an integer number (18511875).

Almost surely, 2^164405870 is an apocalyptic number.

164405870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164405870 is a deficient number, since it is larger than the sum of its proper divisors (131784130).

164405870 is a wasteful number, since it uses less digits than its factorization.

164405870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14419.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 164405870 is about 12822.0852438283. The cubic root of 164405870 is about 547.8215426692.

The spelling of 164405870 in words is "one hundred sixty-four million, four hundred five thousand, eight hundred seventy".