2147969880 has 384 divisors, whose sum is σ = 8561764800. Its totient is φ = 477259776.

The previous prime is 2147969867. The next prime is 2147969911. The reversal of 2147969880 is 889697412.

2147969880 is a `hidden beast` number, since 2 + 1 + 479 + 6 + 98 + 80 = 666.

It is a super-2 number, since 2×2147969880² = 9227549210774428800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1957492 + ... + 1958588.

Almost surely, 2^2147969880 is an apocalyptic number.

2147969880 is a gapful number since it is divisible by the number (20) 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 2147969880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4280882400).

2147969880 is an abundant number, since it is smaller than the sum of its proper divisors (6413794920).

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

2147969880 is a wasteful number, since it uses less digits than its factorization.

2147969880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 2147969880 is about 46346.1959604022. The cubic root of 2147969880 is about 1290.2565201064.

It can be divided in two parts, 214796 and 9880, that added together give a square (224676 = 474²).

The spelling of 2147969880 in words is "two billion, one hundred forty-seven million, nine hundred sixty-nine thousand, eight hundred eighty".