1645046014 has 4 divisors (see below), whose sum is σ = 2467569024. Its totient is φ = 822523006.

The previous prime is 1645046009. The next prime is 1645046023. The reversal of 1645046014 is 4106405461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4106405461 = 16381 ⋅250681.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411261502 + ... + 411261505.

It is an arithmetic number, because the mean of its divisors is an integer number (616892256).

Almost surely, 2^1645046014 is an apocalyptic number.

1645046014 is a deficient number, since it is larger than the sum of its proper divisors (822523010).

1645046014 is an equidigital number, since it uses as much as digits as its factorization.

1645046014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822523009.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1645046014 is about 40559.1668306932. The cubic root of 1645046014 is about 1180.4819476299.

The spelling of 1645046014 in words is "one billion, six hundred forty-five million, forty-six thousand, fourteen".