3654520538 has 4 divisors (see below), whose sum is σ = 5481780810. Its totient is φ = 1827260268.

The previous prime is 3654520537. The next prime is 3654520547. The reversal of 3654520538 is 8350254563.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3288678409 + 365842129 = 57347^2 + 19127^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3654520495 and 3654520504.

It is not an unprimeable number, because it can be changed into a prime (3654520537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913630133 + ... + 913630136.

Almost surely, 2^3654520538 is an apocalyptic number.

3654520538 is a deficient number, since it is larger than the sum of its proper divisors (1827260272).

3654520538 is a wasteful number, since it uses less digits than its factorization.

3654520538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827260271.

The product of its (nonzero) digits is 432000, while the sum is 41.

The square root of 3654520538 is about 60452.6305300274. The cubic root of 3654520538 is about 1540.3170958324.

The spelling of 3654520538 in words is "three billion, six hundred fifty-four million, five hundred twenty thousand, five hundred thirty-eight".