180744421 has 8 divisors (see below), whose sum is σ = 212343264. Its totient is φ = 151673520.

The previous prime is 180744407. The next prime is 180744461. The reversal of 180744421 is 124447081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180744421 - 2¹⁵ = 180711653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180744401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631831 + ... + 632116.

It is an arithmetic number, because the mean of its divisors is an integer number (26542908).

Almost surely, 2^180744421 is an apocalyptic number.

180744421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

180744421 is a deficient number, since it is larger than the sum of its proper divisors (31598843).

180744421 is a wasteful number, since it uses less digits than its factorization.

180744421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263971.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 180744421 is about 13444.1221729052. The cubic root of 180744421 is about 565.3989100816.

The spelling of 180744421 in words is "one hundred eighty million, seven hundred forty-four thousand, four hundred twenty-one".