30641902609 has 4 divisors (see below), whose sum is σ = 30644558704. Its totient is φ = 30639246516.

The previous prime is 30641902549. The next prime is 30641902619. The reversal of 30641902609 is 90620914603.

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 not a de Polignac number, because 30641902609 - 2⁹ = 30641902097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30641902619) 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, 1310667 + ... + 1333840.

It is an arithmetic number, because the mean of its divisors is an integer number (7661139676).

Almost surely, 2^30641902609 is an apocalyptic number.

It is an amenable number.

30641902609 is a deficient number, since it is larger than the sum of its proper divisors (2656095).

30641902609 is a wasteful number, since it uses less digits than its factorization.

30641902609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656094.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 30641902609 in words is "thirty billion, six hundred forty-one million, nine hundred two thousand, six hundred nine".