2049156818 has 8 divisors (see below), whose sum is σ = 3074113920. Its totient is φ = 1024452180.

The previous prime is 2049156817. The next prime is 2049156827. The reversal of 2049156818 is 8186519402.

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

It is not an unprimeable number, because it can be changed into a prime (2049156817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41318 + ... + 76193.

It is an arithmetic number, because the mean of its divisors is an integer number (384264240).

Almost surely, 2^2049156818 is an apocalyptic number.

2049156818 is a deficient number, since it is larger than the sum of its proper divisors (1024957102).

2049156818 is a wasteful number, since it uses less digits than its factorization.

2049156818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126232.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 2049156818 is about 45267.6133455255. The cubic root of 2049156818 is about 1270.1599025727.

The spelling of 2049156818 in words is "two billion, forty-nine million, one hundred fifty-six thousand, eight hundred eighteen".