428981793549 has 8 divisors (see below), whose sum is σ = 577872382080. Its totient is φ = 283039533696.

The previous prime is 428981793529. The next prime is 428981793551. The reversal of 428981793549 is 945397189824.

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

It is not a de Polignac number, because 428981793549 - 2⁷ = 428981793421 is a prime.

It is a super-3 number, since 3×428981793549³ (a number of 36 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428981793529) 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, 737081829 + ... + 737082410.

It is an arithmetic number, because the mean of its divisors is an integer number (72234047760).

Almost surely, 2^428981793549 is an apocalyptic number.

It is an amenable number.

428981793549 is a deficient number, since it is larger than the sum of its proper divisors (148890588531).

428981793549 is a wasteful number, since it uses less digits than its factorization.

428981793549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474164339.

The product of its digits is 156764160, while the sum is 69.

The spelling of 428981793549 in words is "four hundred twenty-eight billion, nine hundred eighty-one million, seven hundred ninety-three thousand, five hundred forty-nine".