145398733 has 2 divisors, whose sum is σ = 145398734. Its totient is φ = 145398732.

The previous prime is 145398727. The next prime is 145398763. The reversal of 145398733 is 337893541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138227049 + 7171684 = 11757^2 + 2678^2 .

It is an emirp because it is prime and its reverse (337893541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145398733 - 2¹³ = 145390541 is a prime.

It is a super-2 number, since 2×145398733² = 42281583116010578, 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 145398733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145398703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72699366 + 72699367.

It is an arithmetic number, because the mean of its divisors is an integer number (72699367).

Almost surely, 2^145398733 is an apocalyptic number.

It is an amenable number.

145398733 is a deficient number, since it is larger than the sum of its proper divisors (1).

145398733 is an equidigital number, since it uses as much as digits as its factorization.

145398733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 145398733 is about 12058.1396989751. The cubic root of 145398733 is about 525.8399048698.

The spelling of 145398733 in words is "one hundred forty-five million, three hundred ninety-eight thousand, seven hundred thirty-three".