1830156242 has 8 divisors (see below), whose sum is σ = 2747493756. Its totient is φ = 914324992.

The previous prime is 1830156241. The next prime is 1830156257. The reversal of 1830156242 is 2426510381.

It can be written as a sum of positive squares in 2 ways, for example, as 1767445681 + 62710561 = 42041^2 + 7919^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1830156199 and 1830156208.

It is not an unprimeable number, because it can be changed into a prime (1830156241) 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, 373523 + ... + 378390.

Almost surely, 2^1830156242 is an apocalyptic number.

1830156242 is a deficient number, since it is larger than the sum of its proper divisors (917337514).

1830156242 is a wasteful number, since it uses less digits than its factorization.

1830156242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753132.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1830156242 is about 42780.3254078320. The cubic root of 1830156242 is about 1223.1960101127.

The spelling of 1830156242 in words is "one billion, eight hundred thirty million, one hundred fifty-six thousand, two hundred forty-two".