1642546445 has 8 divisors (see below), whose sum is σ = 1971690336. Its totient is φ = 1313614096.

The previous prime is 1642546429. The next prime is 1642546471. The reversal of 1642546445 is 5446452461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1642546445 - 2⁴ = 1642546429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35267 + ... + 67296.

It is an arithmetic number, because the mean of its divisors is an integer number (246461292).

Almost surely, 2^1642546445 is an apocalyptic number.

It is an amenable number.

1642546445 is a deficient number, since it is larger than the sum of its proper divisors (329143891).

1642546445 is a wasteful number, since it uses less digits than its factorization.

1642546445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105771.

The product of its digits is 460800, while the sum is 41.

The square root of 1642546445 is about 40528.3412564590. The cubic root of 1642546445 is about 1179.8837492007.

The spelling of 1642546445 in words is "one billion, six hundred forty-two million, five hundred forty-six thousand, four hundred forty-five".