2138458072148 has 12 divisors (see below), whose sum is σ = 3748878610260. Its totient is φ = 1067349897792.

The previous prime is 2138458072147. The next prime is 2138458072171. The reversal of 2138458072148 is 8412708548312.

It can be written as a sum of positive squares in 2 ways, for example, as 1221617351824 + 916840720324 = 1105268^2 + 957518^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2138458072148.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138458072141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469782011 + ... + 469786562.

It is an arithmetic number, because the mean of its divisors is an integer number (312406550855).

Almost surely, 2^{2138458072148} is an apocalyptic number.

It is an amenable number.

2138458072148 is a deficient number, since it is larger than the sum of its proper divisors (1610420538112).

2138458072148 is a wasteful number, since it uses less digits than its factorization.

2138458072148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939569146 (or 939569144 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 53.

The spelling of 2138458072148 in words is "two trillion, one hundred thirty-eight billion, four hundred fifty-eight million, seventy-two thousand, one hundred forty-eight".