2158278495 has 16 divisors (see below), whose sum is σ = 3634995840. Its totient is φ = 1090498464.

The previous prime is 2158278491. The next prime is 2158278509. The reversal of 2158278495 is 5948728512.

2158278495 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2158278495 - 2² = 2158278491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158278491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3786169 + ... + 3786738.

It is an arithmetic number, because the mean of its divisors is an integer number (227187240).

Almost surely, 2^2158278495 is an apocalyptic number.

2158278495 is a deficient number, since it is larger than the sum of its proper divisors (1476717345).

2158278495 is a wasteful number, since it uses less digits than its factorization.

2158278495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7572934.

The product of its digits is 1612800, while the sum is 51.

The square root of 2158278495 is about 46457.2760178640. The cubic root of 2158278495 is about 1292.3173088486.

The spelling of 2158278495 in words is "two billion, one hundred fifty-eight million, two hundred seventy-eight thousand, four hundred ninety-five".