145264389 has 16 divisors (see below), whose sum is σ = 202560000. Its totient is φ = 92424816.

The previous prime is 145264381. The next prime is 145264391. The reversal of 145264389 is 983462541.

It is not a de Polignac number, because 145264389 - 2³ = 145264381 is a prime.

It is a super-2 number, since 2×145264389² = 42203485423086642, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145264389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145264381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32322 + ... + 36540.

It is an arithmetic number, because the mean of its divisors is an integer number (12660000).

Almost surely, 2^145264389 is an apocalyptic number.

It is an amenable number.

145264389 is a deficient number, since it is larger than the sum of its proper divisors (57295611).

145264389 is a wasteful number, since it uses less digits than its factorization.

145264389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744.

The product of its digits is 207360, while the sum is 42.

The square root of 145264389 is about 12052.5677347194. The cubic root of 145264389 is about 525.6779016130.

It can be divided in two parts, 14526 and 4389, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 145264389 in words is "one hundred forty-five million, two hundred sixty-four thousand, three hundred eighty-nine".