1949995940 has 24 divisors (see below), whose sum is σ = 4096007160. Its totient is φ = 779804928.

The previous prime is 1949995937. The next prime is 1949995987. The reversal of 1949995940 is 495999491.

It can be written as a sum of positive squares in 4 ways, for example, as 210772324 + 1739223616 = 14518^2 + 41704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1949995940.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92726 + ... + 111794.

It is an arithmetic number, because the mean of its divisors is an integer number (170666965).

Almost surely, 2^1949995940 is an apocalyptic number.

1949995940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1949995940 is an abundant number, since it is smaller than the sum of its proper divisors (2146011220).

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

1949995940 is a wasteful number, since it uses less digits than its factorization.

1949995940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24191 (or 24189 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 59.

The square root of 1949995940 is about 44158.7583611677. The cubic root of 1949995940 is about 1249.3321104023.

The spelling of 1949995940 in words is "one billion, nine hundred forty-nine million, nine hundred ninety-five thousand, nine hundred forty".