428106081949 has 16 divisors (see below), whose sum is σ = 527106787200. Its totient is φ = 338588228160.

The previous prime is 428106081943. The next prime is 428106081961. The reversal of 428106081949 is 949180601824.

It is not a de Polignac number, because 428106081949 - 2²⁵ = 428072527517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428106081896 and 428106081905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428106081943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690847 + ... + 1154764.

It is an arithmetic number, because the mean of its divisors is an integer number (32944174200).

Almost surely, 2^428106081949 is an apocalyptic number.

It is an amenable number.

428106081949 is a deficient number, since it is larger than the sum of its proper divisors (99000705251).

428106081949 is a wasteful number, since it uses less digits than its factorization.

428106081949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848180.

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 428106081949 in words is "four hundred twenty-eight billion, one hundred six million, eighty-one thousand, nine hundred forty-nine".