144791864 has 48 divisors (see below), whose sum is σ = 316910880. Its totient is φ = 61837440.

The previous prime is 144791851. The next prime is 144791897. The reversal of 144791864 is 468197441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168524 + ... + 169380.

It is an arithmetic number, because the mean of its divisors is an integer number (6602310).

Almost surely, 2^144791864 is an apocalyptic number.

144791864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144791864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158455440).

144791864 is an abundant number, since it is smaller than the sum of its proper divisors (172119016).

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

144791864 is a wasteful number, since it uses less digits than its factorization.

144791864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1297 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 144791864 is about 12032.9490982053. The cubic root of 144791864 is about 525.1072965883.

The spelling of 144791864 in words is "one hundred forty-four million, seven hundred ninety-one thousand, eight hundred sixty-four".