1345572446 has 4 divisors (see below), whose sum is σ = 2018358672. Its totient is φ = 672786222.

The previous prime is 1345572443. The next prime is 1345572461. The reversal of 1345572446 is 6442755431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6442755431 = 7 ⋅920393633.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345572443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336393110 + ... + 336393113.

It is an arithmetic number, because the mean of its divisors is an integer number (504589668).

Almost surely, 2^1345572446 is an apocalyptic number.

1345572446 is a deficient number, since it is larger than the sum of its proper divisors (672786226).

1345572446 is an equidigital number, since it uses as much as digits as its factorization.

1345572446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672786225.

The product of its digits is 403200, while the sum is 41.

The square root of 1345572446 is about 36682.0452810363. The cubic root of 1345572446 is about 1103.9998856814. Note that the first 3 decimals are identical.

The spelling of 1345572446 in words is "one billion, three hundred forty-five million, five hundred seventy-two thousand, four hundred forty-six".