2018809394 has 32 divisors (see below), whose sum is σ = 3658711680. Its totient is φ = 816124032.

The previous prime is 2018809369. The next prime is 2018809409. The reversal of 2018809394 is 4939088102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45692 + ... + 78264.

It is an arithmetic number, because the mean of its divisors is an integer number (114334740).

Almost surely, 2^2018809394 is an apocalyptic number.

2018809394 is a deficient number, since it is larger than the sum of its proper divisors (1639902286).

2018809394 is a wasteful number, since it uses less digits than its factorization.

2018809394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32834.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 2018809394 is about 44931.1628382796. The cubic root of 2018809394 is about 1263.8584574355.

The spelling of 2018809394 in words is "two billion, eighteen million, eight hundred nine thousand, three hundred ninety-four".