20091918382 has 16 divisors (see below), whose sum is σ = 30376436112. Its totient is φ = 9966741120.

The previous prime is 20091918361. The next prime is 20091918419. The reversal of 20091918382 is 28381919002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58678 + ... + 208870.

It is an arithmetic number, because the mean of its divisors is an integer number (1898527257).

Almost surely, 2^20091918382 is an apocalyptic number.

20091918382 is a deficient number, since it is larger than the sum of its proper divisors (10284517730).

20091918382 is a wasteful number, since it uses less digits than its factorization.

20091918382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150723.

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 20091918382 in words is "twenty billion, ninety-one million, nine hundred eighteen thousand, three hundred eighty-two".