2154071518 has 16 divisors (see below), whose sum is σ = 3348043776. Its totient is φ = 1038321720.

The previous prime is 2154071503. The next prime is 2154071519. The reversal of 2154071518 is 8151704512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154071519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49746 + ... + 82357.

It is an arithmetic number, because the mean of its divisors is an integer number (209252736).

Almost surely, 2^2154071518 is an apocalyptic number.

2154071518 is a deficient number, since it is larger than the sum of its proper divisors (1193972258).

2154071518 is a wasteful number, since it uses less digits than its factorization.

2154071518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132399.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 2154071518 is about 46411.9760191268. The cubic root of 2154071518 is about 1291.4770889656.

The spelling of 2154071518 in words is "two billion, one hundred fifty-four million, seventy-one thousand, five hundred eighteen".