1213477460 has 36 divisors (see below), whose sum is σ = 2759412348. Its totient is φ = 448051968.

The previous prime is 1213477457. The next prime is 1213477471. The reversal of 1213477460 is 647743121.

It can be written as a sum of positive squares in 6 ways, for example, as 654438724 + 559038736 = 25582^2 + 23644^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1213477460.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 176129 + ... + 182888.

It is an arithmetic number, because the mean of its divisors is an integer number (76650343).

Almost surely, 2^1213477460 is an apocalyptic number.

1213477460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213477460 is an abundant number, since it is smaller than the sum of its proper divisors (1545934888).

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

1213477460 is a wasteful number, since it uses less digits than its factorization.

1213477460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359052 (or 359037 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 1213477460 is about 34835.0033730442. The cubic root of 1213477460 is about 1066.6220838571.

The spelling of 1213477460 in words is "one billion, two hundred thirteen million, four hundred seventy-seven thousand, four hundred sixty".