145428637 has 2 divisors, whose sum is σ = 145428638. Its totient is φ = 145428636.

The previous prime is 145428631. The next prime is 145428653. The reversal of 145428637 is 736824541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119814916 + 25613721 = 10946^2 + 5061^2 .

It is a cyclic number.

It is not a de Polignac number, because 145428637 - 2¹⁹ = 144904349 is a prime.

It is a super-2 number, since 2×145428637² = 42298976919355538, 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 145428637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145428631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72714318 + 72714319.

It is an arithmetic number, because the mean of its divisors is an integer number (72714319).

Almost surely, 2^145428637 is an apocalyptic number.

It is an amenable number.

145428637 is a deficient number, since it is larger than the sum of its proper divisors (1).

145428637 is an equidigital number, since it uses as much as digits as its factorization.

145428637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 145428637 is about 12059.3796274933. The cubic root of 145428637 is about 525.8759520399.

The spelling of 145428637 in words is "one hundred forty-five million, four hundred twenty-eight thousand, six hundred thirty-seven".