1950000000 has 288 divisors, whose sum is σ = 6972652680. Its totient is φ = 480000000.

The previous prime is 1949999999. The next prime is 1950000023. The reversal of 1950000000 is 591.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 149999994 + ... + 150000006.

Almost surely, 2^1950000000 is an apocalyptic number.

1950000000 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 1950000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3486326340).

1950000000 is an abundant number, since it is smaller than the sum of its proper divisors (5022652680).

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

1950000000 is an frugal number, since it uses more digits than its factorization.

1950000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 1950000000 is about 44158.8043316392. The cubic root of 1950000000 is about 1249.3329774614.

Adding to 1950000000 its reverse (591), we get a palindrome (1950000591).

The spelling of 1950000000 in words is "one billion, nine hundred fifty million", and thus it is an aban number.