1445247346 has 4 divisors (see below), whose sum is σ = 2167871022. Its totient is φ = 722623672.

The previous prime is 1445247337. The next prime is 1445247361. The reversal of 1445247346 is 6437425441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 975875121 + 469372225 = 31239^2 + 21665^2 .

It is a super-2 number, since 2×1445247346² = 4177479782240087432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1445247299 and 1445247308.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361311835 + ... + 361311838.

Almost surely, 2^1445247346 is an apocalyptic number.

1445247346 is a deficient number, since it is larger than the sum of its proper divisors (722623676).

1445247346 is an equidigital number, since it uses as much as digits as its factorization.

1445247346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722623675.

The product of its digits is 322560, while the sum is 40.

The square root of 1445247346 is about 38016.4089045770. The cubic root of 1445247346 is about 1130.6132223844.

The spelling of 1445247346 in words is "one billion, four hundred forty-five million, two hundred forty-seven thousand, three hundred forty-six".