145281164 has 24 divisors (see below), whose sum is σ = 290922240. Its totient is φ = 62186256.

The previous prime is 145281161. The next prime is 145281173. The reversal of 145281164 is 461182541.

It is a super-2 number, since 2×145281164² = 42213233226389792, 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 145281164.

It is not an unprimeable number, because it can be changed into a prime (145281161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23777 + ... + 29255.

It is an arithmetic number, because the mean of its divisors is an integer number (12121760).

Almost surely, 2^145281164 is an apocalyptic number.

145281164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145281164 is an abundant number, since it is smaller than the sum of its proper divisors (145641076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145281164 is a wasteful number, since it uses less digits than its factorization.

145281164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437 (or 6435 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 145281164 is about 12053.2636244297. The cubic root of 145281164 is about 525.6981357701.

The spelling of 145281164 in words is "one hundred forty-five million, two hundred eighty-one thousand, one hundred sixty-four".