1950842881 has 12 divisors (see below), whose sum is σ = 2114095788. Its totient is φ = 1799376384.

The previous prime is 1950842863. The next prime is 1950842893. The reversal of 1950842881 is 1882480591.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1178892225 + 771950656 = 34335^2 + 27784^2 .

It is not a de Polignac number, because 1950842881 - 2⁵ = 1950842849 is a prime.

It is a super-2 number, since 2×1950842881² = 7611575892696760322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1950842801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258741 + ... + 266173.

It is an arithmetic number, because the mean of its divisors is an integer number (176174649).

Almost surely, 2^1950842881 is an apocalyptic number.

It is an amenable number.

1950842881 is a deficient number, since it is larger than the sum of its proper divisors (163252907).

1950842881 is a wasteful number, since it uses less digits than its factorization.

1950842881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9012 (or 8999 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 46.

The square root of 1950842881 is about 44168.3470485369. The cubic root of 1950842881 is about 1249.5129582035.

The spelling of 1950842881 in words is "one billion, nine hundred fifty million, eight hundred forty-two thousand, eight hundred eighty-one".