12190431986 has 16 divisors (see below), whose sum is σ = 19115984448. Its totient is φ = 5819418000.

The previous prime is 12190431973. The next prime is 12190431989. The reversal of 12190431986 is 68913409121.

It is not an unprimeable number, because it can be changed into a prime (12190431989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220040 + ... + 269811.

It is an arithmetic number, because the mean of its divisors is an integer number (1194749028).

Almost surely, 2^12190431986 is an apocalyptic number.

12190431986 is a deficient number, since it is larger than the sum of its proper divisors (6925552462).

12190431986 is a wasteful number, since it uses less digits than its factorization.

12190431986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490417.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 12190431986 in words is "twelve billion, one hundred ninety million, four hundred thirty-one thousand, nine hundred eighty-six".