164144590 has 16 divisors (see below), whose sum is σ = 295849872. Its totient is φ = 65571264.

The previous prime is 164144587. The next prime is 164144621. The reversal of 164144590 is 95441461.

It is a happy number.

164144590 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 2559 + ... + 18298.

It is an arithmetic number, because the mean of its divisors is an integer number (18490617).

Almost surely, 2^164144590 is an apocalyptic number.

164144590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164144590 is a deficient number, since it is larger than the sum of its proper divisors (131705282).

164144590 is a wasteful number, since it uses less digits than its factorization.

164144590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21651.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 164144590 is about 12811.8925221842. The cubic root of 164144590 is about 547.5311825891.

The spelling of 164144590 in words is "one hundred sixty-four million, one hundred forty-four thousand, five hundred ninety".