2161850698 has 12 divisors (see below), whose sum is σ = 3772209042. Its totient is φ = 926507400.

The previous prime is 2161850659. The next prime is 2161850699. The reversal of 2161850698 is 8960581612.

It can be written as a sum of positive squares in only one way, i.e., 1637578089 + 524272609 = 40467^2 + 22897^2 .

It is not an unprimeable number, because it can be changed into a prime (2161850699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11029753 + ... + 11029948.

Almost surely, 2^2161850698 is an apocalyptic number.

2161850698 is a deficient number, since it is larger than the sum of its proper divisors (1610358344).

2161850698 is a wasteful number, since it uses less digits than its factorization.

2161850698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22059717 (or 22059710 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 2161850698 is about 46495.7062318662. The cubic root of 2161850698 is about 1293.0298945526.

The spelling of 2161850698 in words is "two billion, one hundred sixty-one million, eight hundred fifty thousand, six hundred ninety-eight".