2745137405 has 8 divisors (see below), whose sum is σ = 3312365784. Its totient is φ = 2183976000.

The previous prime is 2745137399. The next prime is 2745137431. The reversal of 2745137405 is 5047315472.

It can be written as a sum of positive squares in 4 ways, for example, as 179613604 + 2565523801 = 13402^2 + 50651^2 .

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

It is not a de Polignac number, because 2745137405 - 2⁶ = 2745137341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1515746 + ... + 1517555.

It is an arithmetic number, because the mean of its divisors is an integer number (414045723).

Almost surely, 2^2745137405 is an apocalyptic number.

It is an amenable number.

2745137405 is a deficient number, since it is larger than the sum of its proper divisors (567228379).

2745137405 is a wasteful number, since it uses less digits than its factorization.

2745137405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033487.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 2745137405 is about 52394.0588712117. The cubic root of 2745137405 is about 1400.1934095038.

The spelling of 2745137405 in words is "two billion, seven hundred forty-five million, one hundred thirty-seven thousand, four hundred five".