428018150819 has 4 divisors (see below), whose sum is σ = 489163600944. Its totient is φ = 366872700696.

The previous prime is 428018150801. The next prime is 428018150831. The reversal of 428018150819 is 918051810824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428018150819 - 2¹² = 428018146723 is a prime.

It is a super-2 number, since 2×428018150819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428018150419) 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, 30572725052 + ... + 30572725065.

It is an arithmetic number, because the mean of its divisors is an integer number (122290900236).

Almost surely, 2^428018150819 is an apocalyptic number.

428018150819 is a deficient number, since it is larger than the sum of its proper divisors (61145450125).

428018150819 is an equidigital number, since it uses as much as digits as its factorization.

428018150819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61145450124.

The product of its (nonzero) digits is 184320, while the sum is 47.

The spelling of 428018150819 in words is "four hundred twenty-eight billion, eighteen million, one hundred fifty thousand, eight hundred nineteen".