3540073945 has 4 divisors (see below), whose sum is σ = 4248088740. Its totient is φ = 2832059152.

The previous prime is 3540073909. The next prime is 3540073949. The reversal of 3540073945 is 5493700453.

It is a happy number.

3540073945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5493700453 = 59 ⋅93113567.

It can be written as a sum of positive squares in 2 ways, for example, as 551921049 + 2988152896 = 23493^2 + 54664^2 .

It is a cyclic number.

It is not a de Polignac number, because 3540073945 - 2¹⁷ = 3539942873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3540073898 and 3540073907.

It is not an unprimeable number, because it can be changed into a prime (3540073949) 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, 354007390 + ... + 354007399.

It is an arithmetic number, because the mean of its divisors is an integer number (1062022185).

Almost surely, 2^3540073945 is an apocalyptic number.

It is an amenable number.

3540073945 is a deficient number, since it is larger than the sum of its proper divisors (708014795).

3540073945 is an equidigital number, since it uses as much as digits as its factorization.

3540073945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708014794.

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 3540073945 is about 59498.5205278249. The cubic root of 3540073945 is about 1524.0671812052.

The spelling of 3540073945 in words is "three billion, five hundred forty million, seventy-three thousand, nine hundred forty-five".