2045625538 has 32 divisors (see below), whose sum is σ = 3730847040. Its totient is φ = 829071360.

The previous prime is 2045625511. The next prime is 2045625583. The reversal of 2045625538 is 8355265402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2045625538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136831 + ... + 151042.

It is an arithmetic number, because the mean of its divisors is an integer number (116588970).

Almost surely, 2^2045625538 is an apocalyptic number.

2045625538 is a deficient number, since it is larger than the sum of its proper divisors (1685221502).

2045625538 is a wasteful number, since it uses less digits than its factorization.

2045625538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287922.

The product of its (nonzero) digits is 288000, while the sum is 40.

The square root of 2045625538 is about 45228.5920408761. The cubic root of 2045625538 is about 1269.4298674728.

The spelling of 2045625538 in words is "two billion, forty-five million, six hundred twenty-five thousand, five hundred thirty-eight".