7540770393 has 48 divisors (see below), whose sum is σ = 12543397776. Its totient is φ = 4324147200.

The previous prime is 7540770371. The next prime is 7540770403. The reversal of 7540770393 is 3930770457.

7540770393 is a `hidden beast` number, since 7 + 540 + 7 + 70 + 39 + 3 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 317980224 + 7222790169 = 17832^2 + 84987^2 .

It is not a de Polignac number, because 7540770393 - 2⁵ = 7540770361 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7540778393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182121 + ... + 219657.

It is an arithmetic number, because the mean of its divisors is an integer number (261320787).

Almost surely, 2^7540770393 is an apocalyptic number.

It is an amenable number.

7540770393 is a deficient number, since it is larger than the sum of its proper divisors (5002627383).

7540770393 is a wasteful number, since it uses less digits than its factorization.

7540770393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37674 (or 37671 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 45.

The square root of 7540770393 is about 86837.6093233802. The cubic root of 7540770393 is about 1960.9743171445.

The spelling of 7540770393 in words is "seven billion, five hundred forty million, seven hundred seventy thousand, three hundred ninety-three".