1949220000 has 1080 divisors, whose sum is σ = 9187774596. Its totient is φ = 387072000.

The previous prime is 1949219981. The next prime is 1949220071. The reversal of 1949220000 is 229491.

It can be written as a sum of positive squares in 10 ways, for example, as 206324496 + 1742895504 = 14364^2 + 41748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 114659992 + ... + 114660008.

Almost surely, 2^1949220000 is an apocalyptic number.

1949220000 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 1949220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4593887298).

1949220000 is an abundant number, since it is smaller than the sum of its proper divisors (7238554596).

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

1949220000 is a wasteful number, since it uses less digits than its factorization.

1949220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1949220000 is about 44149.9716874201. The cubic root of 1949220000 is about 1249.1663775158.

Adding to 1949220000 its reverse (229491), we get a palindrome (1949449491).

The spelling of 1949220000 in words is "one billion, nine hundred forty-nine million, two hundred twenty thousand".