146734197481 has 9 divisors (see below), whose sum is σ = 154871197623. Its totient is φ = 139004449920.

The previous prime is 146734197469. The next prime is 146734197487. The reversal of 146734197481 is 184791437641.

The square root of 146734197481 is 383059.

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

It can be written as a sum of positive squares in only one way, i.e., 95784679081 + 50949518400 = 309491^2 + 225720^2 .

It is not a de Polignac number, because 146734197481 - 2²⁵ = 146700643049 is a prime.

It is a super-2 number, since 2×146734197481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146734197487) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7268041 + ... + 7288201.

It is an arithmetic number, because the mean of its divisors is an integer number (17207910847).

Almost surely, 2^146734197481 is an apocalyptic number.

146734197481 is the 383059-th square number.

146734197481 is the 191530-th centered octagonal number.

It is an amenable number.

146734197481 is a deficient number, since it is larger than the sum of its proper divisors (8137000142).

146734197481 is an frugal number, since it uses more digits than its factorization.

146734197481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40360 (or 20180 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 55.

The spelling of 146734197481 in words is "one hundred forty-six billion, seven hundred thirty-four million, one hundred ninety-seven thousand, four hundred eighty-one".