18428949200 has 30 divisors (see below), whose sum is σ = 44275551414. Its totient is φ = 7371579520.

The previous prime is 18428949197. The next prime is 18428949251. The reversal of 18428949200 is 294982481.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3732721216 + 14696227984 = 61096^2 + 121228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23035787 + ... + 23036586.

Almost surely, 2^18428949200 is an apocalyptic number.

18428949200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18428949200 is an abundant number, since it is smaller than the sum of its proper divisors (25846602214).

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

18428949200 is a wasteful number, since it uses less digits than its factorization.

18428949200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46072391 (or 46072380 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 18428949200 in words is "eighteen billion, four hundred twenty-eight million, nine hundred forty-nine thousand, two hundred".