1607405945 has 16 divisors (see below), whose sum is σ = 2014467840. Its totient is φ = 1228966464.

The previous prime is 1607405941. The next prime is 1607405977. The reversal of 1607405945 is 5495047061.

It is a cyclic number.

It is not a de Polignac number, because 1607405945 - 2² = 1607405941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1607405941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146387 + ... + 156983.

It is an arithmetic number, because the mean of its divisors is an integer number (125904240).

Almost surely, 2^1607405945 is an apocalyptic number.

It is an amenable number.

1607405945 is a deficient number, since it is larger than the sum of its proper divisors (407061895).

1607405945 is a wasteful number, since it uses less digits than its factorization.

1607405945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1607405945 is about 40092.4674346691. The cubic root of 1607405945 is about 1171.4089109863.

The spelling of 1607405945 in words is "one billion, six hundred seven million, four hundred five thousand, nine hundred forty-five".