2161447392 has 48 divisors (see below), whose sum is σ = 6110249040. Its totient is φ = 665060352.

The previous prime is 2161447381. The next prime is 2161447397. The reversal of 2161447392 is 2937441612.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 2161447392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161447397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864717 + ... + 867212.

It is an arithmetic number, because the mean of its divisors is an integer number (127296855).

Almost surely, 2^2161447392 is an apocalyptic number.

It is an amenable number.

2161447392 is an abundant number, since it is smaller than the sum of its proper divisors (3948801648).

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

2161447392 is a wasteful number, since it uses less digits than its factorization.

2161447392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731955 (or 1731947 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 2161447392 is about 46491.3690054401. The cubic root of 2161447392 is about 1292.9494821005.

It can be divided in two parts, 21614 and 47392, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 2161447392 in words is "two billion, one hundred sixty-one million, four hundred forty-seven thousand, three hundred ninety-two".