1213478474 has 12 divisors (see below), whose sum is σ = 1971005526. Its totient is φ = 560066832.

The previous prime is 1213478471. The next prime is 1213478501. The reversal of 1213478474 is 4748743121.

It can be written as a sum of positive squares in 3 ways, for example, as 999002449 + 214476025 = 31607^2 + 14645^2 .

It is a super-2 number, since 2×1213478474² = 2945060013722737352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1213478471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1794749 + ... + 1795424.

Almost surely, 2^1213478474 is an apocalyptic number.

1213478474 is a deficient number, since it is larger than the sum of its proper divisors (757527052).

1213478474 is a wasteful number, since it uses less digits than its factorization.

1213478474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590201 (or 3590188 counting only the distinct ones).

The product of its digits is 150528, while the sum is 41.

The square root of 1213478474 is about 34835.0179273673. The cubic root of 1213478474 is about 1066.6223809522.

The spelling of 1213478474 in words is "one billion, two hundred thirteen million, four hundred seventy-eight thousand, four hundred seventy-four".