145866164 has 6 divisors (see below), whose sum is σ = 255265794. Its totient is φ = 72933080.

The previous prime is 145866121. The next prime is 145866179. The reversal of 145866164 is 461668541.

It can be written as a sum of positive squares in only one way, i.e., 138532900 + 7333264 = 11770^2 + 2708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18233267 + ... + 18233274.

It is an arithmetic number, because the mean of its divisors is an integer number (42544299).

Almost surely, 2^145866164 is an apocalyptic number.

It is an amenable number.

145866164 is a deficient number, since it is larger than the sum of its proper divisors (109399630).

145866164 is a wasteful number, since it uses less digits than its factorization.

145866164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36466545 (or 36466543 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 145866164 is about 12077.5065307372. The cubic root of 145866164 is about 526.4027959451.

The spelling of 145866164 in words is "one hundred forty-five million, eight hundred sixty-six thousand, one hundred sixty-four".