1949925888 has 120 divisors (see below), whose sum is σ = 5765435676. Its totient is φ = 634060800.

The previous prime is 1949925881. The next prime is 1949925893. The reversal of 1949925888 is 8885299491.

1949925888 is a `hidden beast` number, since 1 + 9 + 49 + 9 + 2 + 588 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1829101824 + 120824064 = 42768^2 + 10992^2 .

It is not an unprimeable number, because it can be changed into a prime (1949925881) 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, 183768 + ... + 194088.

Almost surely, 2^1949925888 is an apocalyptic number.

1949925888 is a gapful number since it is divisible by the number (18) 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 1949925888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2882717838).

1949925888 is an abundant number, since it is smaller than the sum of its proper divisors (3815509788).

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

1949925888 is a wasteful number, since it uses less digits than its factorization.

1949925888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10386 (or 10367 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 63.

The square root of 1949925888 is about 44157.9651705103. The cubic root of 1949925888 is about 1249.3171498138.

The spelling of 1949925888 in words is "one billion, nine hundred forty-nine million, nine hundred twenty-five thousand, eight hundred eighty-eight".