146013401689 has 3 divisors (see below), whose sum is σ = 146013783807. Its totient is φ = 146013019572.

The previous prime is 146013401669. The next prime is 146013401707. The reversal of 146013401689 is 986104310641.

The square root of 146013401689 is 382117.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 129344526025 + 16668875664 = 359645^2 + 129108^2 .

It is not a de Polignac number, because 146013401689 - 2⁵ = 146013401657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146013401669) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 191059 + ... + 573175.

It is an arithmetic number, because the mean of its divisors is an integer number (48671261269).

Almost surely, 2^146013401689 is an apocalyptic number.

146013401689 is the 382117-th square number.

146013401689 is the 191059-th centered octagonal number.

It is an amenable number.

146013401689 is a deficient number, since it is larger than the sum of its proper divisors (382118).

146013401689 is an frugal number, since it uses more digits than its factorization.

146013401689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764234 (or 382117 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 146013401689 in words is "one hundred forty-six billion, thirteen million, four hundred one thousand, six hundred eighty-nine".