1343451946 has 4 divisors (see below), whose sum is σ = 2015177922. Its totient is φ = 671725972.

The previous prime is 1343451937. The next prime is 1343451947. The reversal of 1343451946 is 6491543431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6491543431 = 113 ⋅57447287.

It can be written as a sum of positive squares in only one way, i.e., 952401321 + 391050625 = 30861^2 + 19775^2 .

It is a super-2 number, since 2×1343451946² = 3609726262422373832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1343451899 and 1343451908.

It is not an unprimeable number, because it can be changed into a prime (1343451947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335862985 + ... + 335862988.

Almost surely, 2^1343451946 is an apocalyptic number.

1343451946 is a deficient number, since it is larger than the sum of its proper divisors (671725976).

1343451946 is an equidigital number, since it uses as much as digits as its factorization.

1343451946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671725975.

The product of its digits is 155520, while the sum is 40.

The square root of 1343451946 is about 36653.1300982604. The cubic root of 1343451946 is about 1103.4196462466.

The spelling of 1343451946 in words is "one billion, three hundred forty-three million, four hundred fifty-one thousand, nine hundred forty-six".