1995549120 has 336 divisors, whose sum is σ = 7188269088. Its totient is φ = 507617280.

The previous prime is 1995549071. The next prime is 1995549121. The reversal of 1995549120 is 219455991.

1995549120 is a `hidden beast` number, since 1 + 9 + 9 + 554 + 91 + 2 + 0 = 666.

1995549120 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995549121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6500007 + ... + 6500313.

It is an arithmetic number, because the mean of its divisors is an integer number (21393658).

Almost surely, 2^1995549120 is an apocalyptic number.

1995549120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1995549120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3594134544).

1995549120 is an abundant number, since it is smaller than the sum of its proper divisors (5192719968).

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

1995549120 is a wasteful number, since it uses less digits than its factorization.

1995549120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The square root of 1995549120 is about 44671.5694821662. The cubic root of 1995549120 is about 1258.9857294845.

The spelling of 1995549120 in words is "one billion, nine hundred ninety-five million, five hundred forty-nine thousand, one hundred twenty".