145774629181 has 2 divisors, whose sum is σ = 145774629182. Its totient is φ = 145774629180.

The previous prime is 145774629173. The next prime is 145774629197. The reversal of 145774629181 is 181926477541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144761225625 + 1013403556 = 380475^2 + 31834^2 .

It is a cyclic number.

It is not a de Polignac number, because 145774629181 - 2³ = 145774629173 is a prime.

It is a super-2 number, since 2×145774629181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145774629881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72887314590 + 72887314591.

It is an arithmetic number, because the mean of its divisors is an integer number (72887314591).

Almost surely, 2^145774629181 is an apocalyptic number.

It is an amenable number.

145774629181 is a deficient number, since it is larger than the sum of its proper divisors (1).

145774629181 is an equidigital number, since it uses as much as digits as its factorization.

145774629181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 55.

The spelling of 145774629181 in words is "one hundred forty-five billion, seven hundred seventy-four million, six hundred twenty-nine thousand, one hundred eighty-one".