1660348238 has 4 divisors (see below), whose sum is σ = 2490522360. Its totient is φ = 830174118.

The previous prime is 1660348237. The next prime is 1660348267. The reversal of 1660348238 is 8328430661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8328430661 = 39103 ⋅212987.

It is a junction number, because it is equal to n+sod(n) for n = 1660348195 and 1660348204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660348237) 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 as a sum of consecutive naturals, namely, 415087058 + ... + 415087061.

It is an arithmetic number, because the mean of its divisors is an integer number (622630590).

Almost surely, 2^1660348238 is an apocalyptic number.

1660348238 is a deficient number, since it is larger than the sum of its proper divisors (830174122).

1660348238 is an equidigital number, since it uses as much as digits as its factorization.

1660348238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830174121.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 1660348238 is about 40747.3709335952. The cubic root of 1660348238 is about 1184.1309390547.

Adding to 1660348238 its reverse (8328430661), we get a palindrome (9988778899).

The spelling of 1660348238 in words is "one billion, six hundred sixty million, three hundred forty-eight thousand, two hundred thirty-eight".