2745478431 has 6 divisors (see below), whose sum is σ = 3965691080. Its totient is φ = 1830318948.

The previous prime is 2745478429. The next prime is 2745478441. The reversal of 2745478431 is 1348745472.

2745478431 is a `hidden beast` number, since 2 + 74 + 547 + 8 + 4 + 31 = 666.

It is not a de Polignac number, because 2745478431 - 2¹ = 2745478429 is a prime.

It is a super-2 number, since 2×2745478431² = 15075303630172443522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745478441) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 152526571 + ... + 152526588.

Almost surely, 2^2745478431 is an apocalyptic number.

2745478431 is a deficient number, since it is larger than the sum of its proper divisors (1220212649).

2745478431 is a wasteful number, since it uses less digits than its factorization.

2745478431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305053165 (or 305053162 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 2745478431 is about 52397.3132040184. The cubic root of 2745478431 is about 1400.2513887006.

The spelling of 2745478431 in words is "two billion, seven hundred forty-five million, four hundred seventy-eight thousand, four hundred thirty-one".