2161303075 has 48 divisors (see below), whose sum is σ = 2900439360. Its totient is φ = 1591787520.

The previous prime is 2161303049. The next prime is 2161303091. The reversal of 2161303075 is 5703031612.

It is not a de Polignac number, because 2161303075 - 2⁷ = 2161302947 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4245921 + ... + 4246429.

It is an arithmetic number, because the mean of its divisors is an integer number (60425820).

Almost surely, 2^2161303075 is an apocalyptic number.

2161303075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2161303075 is a deficient number, since it is larger than the sum of its proper divisors (739136285).

2161303075 is a wasteful number, since it uses less digits than its factorization.

2161303075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 2161303075 is about 46489.8168957461. The cubic root of 2161303075 is about 1292.9207052811.

Adding to 2161303075 its reverse (5703031612), we get a palindrome (7864334687).

The spelling of 2161303075 in words is "two billion, one hundred sixty-one million, three hundred three thousand, seventy-five".