144161604 has 18 divisors (see below), whose sum is σ = 364408590. Its totient is φ = 48053856.

The previous prime is 144161597. The next prime is 144161623. The reversal of 144161604 is 406161441.

144161604 is a `hidden beast` number, since 1 + 4 + 41 + 616 + 0 + 4 = 666.

144161604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 144000000 + 161604 = 12000^2 + 402^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2002209 + ... + 2002280.

Almost surely, 2^144161604 is an apocalyptic number.

It is an amenable number.

144161604 is an abundant number, since it is smaller than the sum of its proper divisors (220246986).

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

144161604 is a wasteful number, since it uses less digits than its factorization.

144161604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004499 (or 4004494 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 144161604 is about 12006.7316118917. The cubic root of 144161604 is about 524.3442806743.

It can be divided in two parts, 144 and 161604, that multiplied together give a square (23270976 = 4824²).

The spelling of 144161604 in words is "one hundred forty-four million, one hundred sixty-one thousand, six hundred four".