2138602758 has 8 divisors (see below), whose sum is σ = 4277205528. Its totient is φ = 712867584.

The previous prime is 2138602757. The next prime is 2138602769. The reversal of 2138602758 is 8572068312.

It is a sphenic number, since it is the product of 3 distinct primes.

2138602758 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138602757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178216891 + ... + 178216902.

It is an arithmetic number, because the mean of its divisors is an integer number (534650691).

Almost surely, 2^2138602758 is an apocalyptic number.

2138602758 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2138602758 is a wasteful number, since it uses less digits than its factorization.

2138602758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356433798.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 2138602758 is about 46245.0295491310. The cubic root of 2138602758 is about 1288.3782191566.

The spelling of 2138602758 in words is "two billion, one hundred thirty-eight million, six hundred two thousand, seven hundred fifty-eight".