2158049862 has 12 divisors (see below), whose sum is σ = 4675774740. Its totient is φ = 719349948.

The previous prime is 2158049851. The next prime is 2158049891. The reversal of 2158049862 is 2689408512.

2158049862 is a `hidden beast` number, since 2 + 1 + 580 + 4 + 9 + 8 + 62 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59945812 + ... + 59945847.

It is an arithmetic number, because the mean of its divisors is an integer number (389647895).

Almost surely, 2^2158049862 is an apocalyptic number.

2158049862 is an abundant number, since it is smaller than the sum of its proper divisors (2517724878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2158049862 is a wasteful number, since it uses less digits than its factorization.

2158049862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119891667 (or 119891664 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 2158049862 is about 46454.8152724774. The cubic root of 2158049862 is about 1292.2716742038.

The spelling of 2158049862 in words is "two billion, one hundred fifty-eight million, forty-nine thousand, eight hundred sixty-two".