145427693 has 2 divisors, whose sum is σ = 145427694. Its totient is φ = 145427692.

The previous prime is 145427683. The next prime is 145427701. The reversal of 145427693 is 396724541.

145427693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128097124 + 17330569 = 11318^2 + 4163^2 .

It is a cyclic number.

It is not a de Polignac number, because 145427693 - 2⁶ = 145427629 is a prime.

It is a super-2 number, since 2×145427693² = 42298427782604498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145427693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145427683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72713846 + 72713847.

It is an arithmetic number, because the mean of its divisors is an integer number (72713847).

Almost surely, 2^145427693 is an apocalyptic number.

It is an amenable number.

145427693 is a deficient number, since it is larger than the sum of its proper divisors (1).

145427693 is an equidigital number, since it uses as much as digits as its factorization.

145427693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 41.

The square root of 145427693 is about 12059.3404877713. The cubic root of 145427693 is about 525.8748141898.

The spelling of 145427693 in words is "one hundred forty-five million, four hundred twenty-seven thousand, six hundred ninety-three".