1213966953 has 8 divisors (see below), whose sum is σ = 1798469600. Its totient is φ = 809311284.

The previous prime is 1213966951. The next prime is 1213966969. The reversal of 1213966953 is 3596693121.

It is not a de Polignac number, because 1213966953 - 2¹ = 1213966951 is a prime.

It is a super-2 number, since 2×1213966953² = 2947431525952208418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213966899 and 1213966908.

It is not an unprimeable number, because it can be changed into a prime (1213966951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22480843 + ... + 22480896.

It is an arithmetic number, because the mean of its divisors is an integer number (224808700).

Almost surely, 2^1213966953 is an apocalyptic number.

It is an amenable number.

1213966953 is a deficient number, since it is larger than the sum of its proper divisors (584502647).

1213966953 is an equidigital number, since it uses as much as digits as its factorization.

1213966953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44961748 (or 44961742 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 1213966953 is about 34842.0285431259. The cubic root of 1213966953 is about 1066.7654827182.

The spelling of 1213966953 in words is "one billion, two hundred thirteen million, nine hundred sixty-six thousand, nine hundred fifty-three".