1665375054 has 48 divisors (see below), whose sum is σ = 4008171600. Its totient is φ = 459411456.

The previous prime is 1665375037. The next prime is 1665375059. The reversal of 1665375054 is 4505735661.

1665375054 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1665374997 and 1665375015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665375059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89139 + ... + 106190.

It is an arithmetic number, because the mean of its divisors is an integer number (83503575).

Almost surely, 2^1665375054 is an apocalyptic number.

1665375054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1665375054 is an abundant number, since it is smaller than the sum of its proper divisors (2342796546).

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

1665375054 is a wasteful number, since it uses less digits than its factorization.

1665375054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195377 (or 195370 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 1665375054 is about 40809.0070205096. The cubic root of 1665375054 is about 1185.3247471151.

The spelling of 1665375054 in words is "one billion, six hundred sixty-five million, three hundred seventy-five thousand, fifty-four".