2158835377 has 2 divisors, whose sum is σ = 2158835378. Its totient is φ = 2158835376.

The previous prime is 2158835369. The next prime is 2158835383. The reversal of 2158835377 is 7735388512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2068794256 + 90041121 = 45484^2 + 9489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158835377 - 2³ = 2158835369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2158835377.

It is not a weakly prime, because it can be changed into another prime (2158835477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079417688 + 1079417689.

It is an arithmetic number, because the mean of its divisors is an integer number (1079417689).

Almost surely, 2^2158835377 is an apocalyptic number.

It is an amenable number.

2158835377 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158835377 is an equidigital number, since it uses as much as digits as its factorization.

2158835377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 49.

The square root of 2158835377 is about 46463.2691165828. The cubic root of 2158835377 is about 1292.4284477897.

It can be divided in two parts, 21588 and 35377, that added together give a palindrome (56965).

The spelling of 2158835377 in words is "two billion, one hundred fifty-eight million, eight hundred thirty-five thousand, three hundred seventy-seven".