2140388394 has 8 divisors (see below), whose sum is σ = 4280776800. Its totient is φ = 713462796.

The previous prime is 2140388387. The next prime is 2140388429. The reversal of 2140388394 is 4938830412.

It is a sphenic number, since it is the product of 3 distinct primes.

2140388394 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178365694 + ... + 178365705.

It is an arithmetic number, because the mean of its divisors is an integer number (535097100).

Almost surely, 2^2140388394 is an apocalyptic number.

2140388394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2140388394 is a wasteful number, since it uses less digits than its factorization.

2140388394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356731404.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 2140388394 is about 46264.3317686531. The cubic root of 2140388394 is about 1288.7366984685.

The spelling of 2140388394 in words is "two billion, one hundred forty million, three hundred eighty-eight thousand, three hundred ninety-four".