2161443502 has 8 divisors (see below), whose sum is σ = 3254781456. Its totient is φ = 1076516352.

The previous prime is 2161443497. The next prime is 2161443503. The reversal of 2161443502 is 2053441612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161443503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2102058 + ... + 2103085.

It is an arithmetic number, because the mean of its divisors is an integer number (406847682).

Almost surely, 2^2161443502 is an apocalyptic number.

2161443502 is a deficient number, since it is larger than the sum of its proper divisors (1093337954).

2161443502 is a wasteful number, since it uses less digits than its factorization.

2161443502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205402.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2161443502 is about 46491.3271696991. The cubic root of 2161443502 is about 1292.9487064510.

The spelling of 2161443502 in words is "two billion, one hundred sixty-one million, four hundred forty-three thousand, five hundred two".