1613540369 has 4 divisors (see below), whose sum is σ = 1844046144. Its totient is φ = 1383034596.

The previous prime is 1613540351. The next prime is 1613540377. The reversal of 1613540369 is 9630453161.

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 a de Polignac number, because none of the positive numbers 2^k-1613540369 is a prime.

It is a super-2 number, since 2×1613540369² = 5207025044785312322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613540399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115252877 + ... + 115252890.

It is an arithmetic number, because the mean of its divisors is an integer number (461011536).

Almost surely, 2^1613540369 is an apocalyptic number.

It is an amenable number.

1613540369 is a deficient number, since it is larger than the sum of its proper divisors (230505775).

1613540369 is an equidigital number, since it uses as much as digits as its factorization.

1613540369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230505774.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 1613540369 is about 40168.8980306904. The cubic root of 1613540369 is about 1172.8971882038.

The spelling of 1613540369 in words is "one billion, six hundred thirteen million, five hundred forty thousand, three hundred sixty-nine".