11939308830 has 48 divisors (see below), whose sum is σ = 31099081104. Its totient is φ = 3177982080.

The previous prime is 11939308699. The next prime is 11939308831. The reversal of 11939308830 is 3880393911.

It is a happy number.

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 Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939308831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72031 + ... + 170490.

It is an arithmetic number, because the mean of its divisors is an integer number (647897523).

Almost surely, 2^11939308830 is an apocalyptic number.

11939308830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11939308830 is an abundant number, since it is smaller than the sum of its proper divisors (19159772274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11939308830 is a wasteful number, since it uses less digits than its factorization.

11939308830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243081 (or 243078 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 11939308830 in words is "eleven billion, nine hundred thirty-nine million, three hundred eight thousand, eight hundred thirty".