1230513660 has 48 divisors (see below), whose sum is σ = 3828266400. Its totient is φ = 328136832.

The previous prime is 1230513649. The next prime is 1230513673. The reversal of 1230513660 is 663150321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1138825 + ... + 1139904.

It is an arithmetic number, because the mean of its divisors is an integer number (79755550).

Almost surely, 2^1230513660 is an apocalyptic number.

1230513660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230513660 is an abundant number, since it is smaller than the sum of its proper divisors (2597752740).

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

1230513660 is a wasteful number, since it uses less digits than its factorization.

1230513660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278747 (or 2278739 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1230513660 is about 35078.6781392914. The cubic root of 1230513660 is about 1071.5903970428.

Adding to 1230513660 its reverse (663150321), we get a palindrome (1893663981).

The spelling of 1230513660 in words is "one billion, two hundred thirty million, five hundred thirteen thousand, six hundred sixty".