144781892 has 6 divisors (see below), whose sum is σ = 253368318. Its totient is φ = 72390944.

The previous prime is 144781883. The next prime is 144781927. The reversal of 144781892 is 298187441.

It can be written as a sum of positive squares in only one way, i.e., 139098436 + 5683456 = 11794^2 + 2384^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18097733 + ... + 18097740.

It is an arithmetic number, because the mean of its divisors is an integer number (42228053).

Almost surely, 2^144781892 is an apocalyptic number.

It is an amenable number.

144781892 is a deficient number, since it is larger than the sum of its proper divisors (108586426).

144781892 is a wasteful number, since it uses less digits than its factorization.

144781892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36195477 (or 36195475 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 144781892 is about 12032.5347288092. The cubic root of 144781892 is about 525.0952413756.

The spelling of 144781892 in words is "one hundred forty-four million, seven hundred eighty-one thousand, eight hundred ninety-two".