1949889960 has 96 divisors (see below), whose sum is σ = 6372756000. Its totient is φ = 517048704.

The previous prime is 1949889937. The next prime is 1949889967. The reversal of 1949889960 is 699889491.

1949889960 is a `hidden beast` number, since 1 + 9 + 498 + 89 + 9 + 60 = 666.

1949889960 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1949889960² = 7604141712217603200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1949889967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49311 + ... + 79569.

It is an arithmetic number, because the mean of its divisors is an integer number (66382875).

Almost surely, 2^1949889960 is an apocalyptic number.

1949889960 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 1949889960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3186378000).

1949889960 is an abundant number, since it is smaller than the sum of its proper divisors (4422866040).

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

1949889960 is a wasteful number, since it uses less digits than its factorization.

1949889960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30455 (or 30448 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The square root of 1949889960 is about 44157.5583564128. The cubic root of 1949889960 is about 1249.3094767457.

The spelling of 1949889960 in words is "one billion, nine hundred forty-nine million, eight hundred eighty-nine thousand, nine hundred sixty".