2161941038 has 4 divisors (see below), whose sum is σ = 3242911560. Its totient is φ = 1080970518.

The previous prime is 2161941007. The next prime is 2161941053. The reversal of 2161941038 is 8301491612.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2161940989 and 2161941007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540485258 + ... + 540485261.

It is an arithmetic number, because the mean of its divisors is an integer number (810727890).

Almost surely, 2^2161941038 is an apocalyptic number.

2161941038 is a deficient number, since it is larger than the sum of its proper divisors (1080970522).

2161941038 is a wasteful number, since it uses less digits than its factorization.

2161941038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080970521.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 2161941038 is about 46496.6777092729. The cubic root of 2161941038 is about 1293.0479054623.

The spelling of 2161941038 in words is "two billion, one hundred sixty-one million, nine hundred forty-one thousand, thirty-eight".