2161465044 has 24 divisors (see below), whose sum is σ = 5093356128. Its totient is φ = 713354400.

The previous prime is 2161465039. The next prime is 2161465057. The reversal of 2161465044 is 4405641612.

It is a super-2 number, since 2×2161465044² = 9343862272867843872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2161464996 and 2161465014.

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, 890482 + ... + 892905.

It is an arithmetic number, because the mean of its divisors is an integer number (212223172).

Almost surely, 2^2161465044 is an apocalyptic number.

It is an amenable number.

2161465044 is an abundant number, since it is smaller than the sum of its proper divisors (2931891084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161465044 is a wasteful number, since it uses less digits than its factorization.

2161465044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783495 (or 1783493 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2161465044 is about 46491.5588467412. The cubic root of 2161465044 is about 1292.9530018225.

The spelling of 2161465044 in words is "two billion, one hundred sixty-one million, four hundred sixty-five thousand, forty-four".