1213629268 has 6 divisors (see below), whose sum is σ = 2123851226. Its totient is φ = 606814632.

The previous prime is 1213629259. The next prime is 1213629271. The reversal of 1213629268 is 8629263121.

It can be written as a sum of positive squares in only one way, i.e., 1184598724 + 29030544 = 34418^2 + 5388^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1213629268.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151703655 + ... + 151703662.

Almost surely, 2^1213629268 is an apocalyptic number.

It is an amenable number.

1213629268 is a deficient number, since it is larger than the sum of its proper divisors (910221958).

1213629268 is a wasteful number, since it uses less digits than its factorization.

1213629268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303407321 (or 303407319 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 1213629268 is about 34837.1822626343. The cubic root of 1213629268 is about 1066.6665607205. Note that the first 3 decimals are identical.

The spelling of 1213629268 in words is "one billion, two hundred thirteen million, six hundred twenty-nine thousand, two hundred sixty-eight".