2039145975 has 24 divisors (see below), whose sum is σ = 3745987920. Its totient is φ = 1087544160.

The previous prime is 2039145967. The next prime is 2039146007. The reversal of 2039145975 is 5795419302.

It is a happy number.

2039145975 is a `hidden beast` number, since 20 + 39 + 1 + 4 + 597 + 5 = 666.

It is not a de Polignac number, because 2039145975 - 2³ = 2039145967 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2039145975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1509804 + ... + 1511153.

It is an arithmetic number, because the mean of its divisors is an integer number (156082830).

Almost surely, 2^2039145975 is an apocalyptic number.

2039145975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2039145975 is a deficient number, since it is larger than the sum of its proper divisors (1706841945).

2039145975 is a wasteful number, since it uses less digits than its factorization.

2039145975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020976 (or 3020965 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 2039145975 is about 45156.9039572024. The cubic root of 2039145975 is about 1268.0881343255.

It can be divided in two parts, 20391 and 45975, that added together give a palindrome (66366).

The spelling of 2039145975 in words is "two billion, thirty-nine million, one hundred forty-five thousand, nine hundred seventy-five".