11935861830 has 48 divisors (see below), whose sum is σ = 31470345504. Its totient is φ = 3138065280.

The previous prime is 11935861811. The next prime is 11935861841. The reversal of 11935861830 is 3816853911.

It is a happy number.

11935861830 is a `hidden beast` number, since 119 + 358 + 6 + 183 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 927559 + ... + 940338.

It is an arithmetic number, because the mean of its divisors is an integer number (655632198).

Almost surely, 2^11935861830 is an apocalyptic number.

11935861830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11935861830 is an abundant number, since it is smaller than the sum of its proper divisors (19534483674).

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

11935861830 is a wasteful number, since it uses less digits than its factorization.

11935861830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867981 (or 1867978 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 11935861830 in words is "eleven billion, nine hundred thirty-five million, eight hundred sixty-one thousand, eight hundred thirty".