2118405902 has 16 divisors (see below), whose sum is σ = 3275562240. Its totient is φ = 1026973368.

The previous prime is 2118405901. The next prime is 2118405911. The reversal of 2118405902 is 2095048112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118405901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95252 + ... + 115367.

It is an arithmetic number, because the mean of its divisors is an integer number (204722640).

Almost surely, 2^2118405902 is an apocalyptic number.

2118405902 is a deficient number, since it is larger than the sum of its proper divisors (1157156338).

2118405902 is a wasteful number, since it uses less digits than its factorization.

2118405902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210775.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2118405902 is about 46026.1436794351. The cubic root of 2118405902 is about 1284.3095913214.

The spelling of 2118405902 in words is "two billion, one hundred eighteen million, four hundred five thousand, nine hundred two".