2745381157 has 4 divisors (see below), whose sum is σ = 2745701280. Its totient is φ = 2745061036.

The previous prime is 2745381103. The next prime is 2745381179. The reversal of 2745381157 is 7511835472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2745381157 - 2⁷ = 2745381029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745381257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146833 + ... + 164470.

It is an arithmetic number, because the mean of its divisors is an integer number (686425320).

Almost surely, 2^2745381157 is an apocalyptic number.

It is an amenable number.

2745381157 is a deficient number, since it is larger than the sum of its proper divisors (320123).

2745381157 is an equidigital number, since it uses as much as digits as its factorization.

2745381157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320122.

The product of its digits is 235200, while the sum is 43.

The square root of 2745381157 is about 52396.3849611784. The cubic root of 2745381157 is about 1400.2348512475.

The spelling of 2745381157 in words is "two billion, seven hundred forty-five million, three hundred eighty-one thousand, one hundred fifty-seven".