144901649 has 4 divisors (see below), whose sum is σ = 146647536. Its totient is φ = 143155764.

The previous prime is 144901643. The next prime is 144901663. The reversal of 144901649 is 946109441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144901649 - 2¹⁶ = 144836113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144901643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872819 + ... + 872984.

It is an arithmetic number, because the mean of its divisors is an integer number (36661884).

Almost surely, 2^144901649 is an apocalyptic number.

It is an amenable number.

144901649 is a deficient number, since it is larger than the sum of its proper divisors (1745887).

144901649 is an equidigital number, since it uses as much as digits as its factorization.

144901649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745886.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 144901649 is about 12037.5100830695. The cubic root of 144901649 is about 525.2399797811.

The spelling of 144901649 in words is "one hundred forty-four million, nine hundred one thousand, six hundred forty-nine".