2545371993 has 8 divisors (see below), whose sum is σ = 3572452000. Its totient is φ = 1607603328.

The previous prime is 2545371979. The next prime is 2545372001. The reversal of 2545371993 is 3991735452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2545371993 - 2⁶ = 2545371929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545371943) 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 7 ways as a sum of consecutive naturals, for example, 22327768 + ... + 22327881.

It is an arithmetic number, because the mean of its divisors is an integer number (446556500).

Almost surely, 2^2545371993 is an apocalyptic number.

It is an amenable number.

2545371993 is a deficient number, since it is larger than the sum of its proper divisors (1027080007).

2545371993 is a wasteful number, since it uses less digits than its factorization.

2545371993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44655671.

The product of its digits is 1020600, while the sum is 48.

The square root of 2545371993 is about 50451.6797837297. The cubic root of 2545371993 is about 1365.3702016186.

The spelling of 2545371993 in words is "two billion, five hundred forty-five million, three hundred seventy-one thousand, nine hundred ninety-three".