146190431889 has 6 divisors (see below), whose sum is σ = 211163957186. Its totient is φ = 97460287920.

The previous prime is 146190431869. The next prime is 146190431903. The reversal of 146190431889 is 988134091641.

146190431889 is a `hidden beast` number, since 1 + 4 + 619 + 0 + 4 + 3 + 18 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 120813941889 + 25376490000 = 347583^2 + 159300^2 .

It is not a de Polignac number, because 146190431889 - 2²¹ = 146188334737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146190431809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8121690652 + ... + 8121690669.

Almost surely, 2^146190431889 is an apocalyptic number.

It is an amenable number.

146190431889 is a deficient number, since it is larger than the sum of its proper divisors (64973525297).

146190431889 is a wasteful number, since it uses less digits than its factorization.

146190431889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16243381327 (or 16243381324 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 146190431889 in words is "one hundred forty-six billion, one hundred ninety million, four hundred thirty-one thousand, eight hundred eighty-nine".