1999867914 has 192 divisors, whose sum is σ = 5228496000. Its totient is φ = 564537600.

The previous prime is 1999867901. The next prime is 1999867931. The reversal of 1999867914 is 4197689991.

It is a super-2 number, since 2×1999867914² = 7998943346893422792, which contains 22 as substring.

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, 11048904 + ... + 11049084.

It is an arithmetic number, because the mean of its divisors is an integer number (27231750).

Almost surely, 2^1999867914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1999867914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614248000).

1999867914 is an abundant number, since it is smaller than the sum of its proper divisors (3228628086).

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

1999867914 is a wasteful number, since it uses less digits than its factorization.

1999867914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 305 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The square root of 1999867914 is about 44719.8827592381. The cubic root of 1999867914 is about 1259.8933129623.

The spelling of 1999867914 in words is "one billion, nine hundred ninety-nine million, eight hundred sixty-seven thousand, nine hundred fourteen".