1914940986 has 64 divisors (see below), whose sum is σ = 4474061568. Its totient is φ = 535062528.

The previous prime is 1914940921. The next prime is 1914940987. The reversal of 1914940986 is 6890494191.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1914940987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784560 + ... + 786996.

It is an arithmetic number, because the mean of its divisors is an integer number (69907212).

Almost surely, 2^1914940986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1914940986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2237030784).

1914940986 is an abundant number, since it is smaller than the sum of its proper divisors (2559120582).

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

1914940986 is a wasteful number, since it uses less digits than its factorization.

1914940986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 1914940986 is about 43760.0386882827. The cubic root of 1914940986 is about 1241.8004079734.

The spelling of 1914940986 in words is "one billion, nine hundred fourteen million, nine hundred forty thousand, nine hundred eighty-six".