1662751545 has 48 divisors (see below), whose sum is σ = 3332831040. Its totient is φ = 701640576.

The previous prime is 1662751523. The next prime is 1662751561. The reversal of 1662751545 is 5451572661.

1662751545 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1662751545 - 2⁵ = 1662751513 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1662751497 and 1662751506.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77455 + ... + 96564.

It is an arithmetic number, because the mean of its divisors is an integer number (69433980).

Almost surely, 2^1662751545 is an apocalyptic number.

1662751545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1662751545 is an abundant number, since it is smaller than the sum of its proper divisors (1670079495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1662751545 is a wasteful number, since it uses less digits than its factorization.

1662751545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174054 (or 174047 counting only the distinct ones).

The product of its digits is 252000, while the sum is 42.

The square root of 1662751545 is about 40776.8506017814. The cubic root of 1662751545 is about 1184.7019956011.

The spelling of 1662751545 in words is "one billion, six hundred sixty-two million, seven hundred fifty-one thousand, five hundred forty-five".