144865803 has 6 divisors (see below), whose sum is σ = 193182204. Its totient is φ = 96563304.

The previous prime is 144865781. The next prime is 144865807. The reversal of 144865803 is 308568441.

It is not a de Polignac number, because 144865803 - 2⁵ = 144865771 is a prime.

It is a super-2 number, since 2×144865803² = 41972201757669618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144865807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17373 + ... + 24321.

It is an arithmetic number, because the mean of its divisors is an integer number (32197034).

Almost surely, 2^144865803 is an apocalyptic number.

144865803 is a deficient number, since it is larger than the sum of its proper divisors (48316401).

144865803 is an frugal number, since it uses more digits than its factorization.

144865803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13901 (or 6952 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 144865803 is about 12036.0210617961. The cubic root of 144865803 is about 525.1966646424.

The spelling of 144865803 in words is "one hundred forty-four million, eight hundred sixty-five thousand, eight hundred three".