2130538 has 4 divisors (see below), whose sum is σ = 3195810. Its totient is φ = 1065268.

The previous prime is 2130529. The next prime is 2130539. The reversal of 2130538 is 8350312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1951609 + 178929 = 1397^2 + 423^2 .

It is not an unprimeable number, because it can be changed into a prime (2130539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532633 + ... + 532636.

2^2130538 is an apocalyptic number.

2130538 is a deficient number, since it is larger than the sum of its proper divisors (1065272).

2130538 is a wasteful number, since it uses less digits than its factorization.

2130538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065271.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2130538 is about 1459.6362560583. The cubic root of 2130538 is about 128.6756670244.

The spelling of 2130538 in words is "two million, one hundred thirty thousand, five hundred thirty-eight".