1213269646 has 8 divisors (see below), whose sum is σ = 1821048840. Its totient is φ = 606253368.

The previous prime is 1213269641. The next prime is 1213269647. The reversal of 1213269646 is 6469623121.

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 = 1213269599 and 1213269608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213269641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186736 + ... + 193123.

It is an arithmetic number, because the mean of its divisors is an integer number (227631105).

Almost surely, 2^1213269646 is an apocalyptic number.

1213269646 is a deficient number, since it is larger than the sum of its proper divisors (607779194).

1213269646 is a wasteful number, since it uses less digits than its factorization.

1213269646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381458.

The product of its digits is 93312, while the sum is 40.

The square root of 1213269646 is about 34832.0204122586. The cubic root of 1213269646 is about 1066.5611922835.

The spelling of 1213269646 in words is "one billion, two hundred thirteen million, two hundred sixty-nine thousand, six hundred forty-six".