2161514654 has 32 divisors (see below), whose sum is σ = 3656923200. Its totient is φ = 950729472.

The previous prime is 2161514653. The next prime is 2161514659. The reversal of 2161514654 is 4564151612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161514653) 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 15 ways as a sum of consecutive naturals, for example, 159122 + ... + 172170.

It is an arithmetic number, because the mean of its divisors is an integer number (114278850).

Almost surely, 2^2161514654 is an apocalyptic number.

2161514654 is a deficient number, since it is larger than the sum of its proper divisors (1495408546).

2161514654 is a wasteful number, since it uses less digits than its factorization.

2161514654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13364.

The product of its digits is 28800, while the sum is 35.

The square root of 2161514654 is about 46492.0923813932. The cubic root of 2161514654 is about 1292.9628937101.

The spelling of 2161514654 in words is "two billion, one hundred sixty-one million, five hundred fourteen thousand, six hundred fifty-four".