1230457636 has 6 divisors (see below), whose sum is σ = 2153300870. Its totient is φ = 615228816.

The previous prime is 1230457621. The next prime is 1230457639. The reversal of 1230457636 is 6367540321.

It can be written as a sum of positive squares in only one way, i.e., 1011240000 + 219217636 = 31800^2 + 14806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1230457595 and 1230457604.

It is not an unprimeable number, because it can be changed into a prime (1230457639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153807201 + ... + 153807208.

Almost surely, 2^1230457636 is an apocalyptic number.

It is an amenable number.

1230457636 is a deficient number, since it is larger than the sum of its proper divisors (922843234).

1230457636 is a wasteful number, since it uses less digits than its factorization.

1230457636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307614413 (or 307614411 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 1230457636 is about 35077.8795824377. The cubic root of 1230457636 is about 1071.5741339993.

Adding to 1230457636 its reverse (6367540321), we get a palindrome (7597997957).

The spelling of 1230457636 in words is "one billion, two hundred thirty million, four hundred fifty-seven thousand, six hundred thirty-six".