2158982146 has 4 divisors (see below), whose sum is σ = 3238473222. Its totient is φ = 1079491072.

The previous prime is 2158982131. The next prime is 2158982171. The reversal of 2158982146 is 6412898512.

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

It can be written as a sum of positive squares in only one way, i.e., 1111488921 + 1047493225 = 33339^2 + 32365^2 .

It is a super-2 number, since 2×2158982146² = 9322407813493530632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2158982096 and 2158982105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539745535 + ... + 539745538.

Almost surely, 2^2158982146 is an apocalyptic number.

2158982146 is a deficient number, since it is larger than the sum of its proper divisors (1079491076).

2158982146 is a wasteful number, since it uses less digits than its factorization.

2158982146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079491075.

The product of its digits is 276480, while the sum is 46.

The square root of 2158982146 is about 46464.8484986231. The cubic root of 2158982146 is about 1292.4577358238.

The spelling of 2158982146 in words is "two billion, one hundred fifty-eight million, nine hundred eighty-two thousand, one hundred forty-six".