18428949246 has 32 divisors (see below), whose sum is σ = 39163972608. Its totient is φ = 5761192320.

The previous prime is 18428949197. The next prime is 18428949251. The reversal of 18428949246 is 64294982481.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290350 + ... + 348081.

It is an arithmetic number, because the mean of its divisors is an integer number (1223874144).

Almost surely, 2^18428949246 is an apocalyptic number.

18428949246 is an abundant number, since it is smaller than the sum of its proper divisors (20735023362).

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

18428949246 is a wasteful number, since it uses less digits than its factorization.

18428949246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638736.

The product of its digits is 7962624, while the sum is 57.

The spelling of 18428949246 in words is "eighteen billion, four hundred twenty-eight million, nine hundred forty-nine thousand, two hundred forty-six".