131245189894 has 32 divisors (see below), whose sum is σ = 242348924160. Its totient is φ = 51910435872.

The previous prime is 131245189819. The next prime is 131245189897. The reversal of 131245189894 is 498981542131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131245189897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838477 + ... + 982615.

It is an arithmetic number, because the mean of its divisors is an integer number (7573403880).

Almost surely, 2^131245189894 is an apocalyptic number.

131245189894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

131245189894 is a deficient number, since it is larger than the sum of its proper divisors (111103734266).

131245189894 is a wasteful number, since it uses less digits than its factorization.

131245189894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149164.

The product of its digits is 2488320, while the sum is 55.

The spelling of 131245189894 in words is "one hundred thirty-one billion, two hundred forty-five million, one hundred eighty-nine thousand, eight hundred ninety-four".