145437894 has 96 divisors (see below), whose sum is σ = 384384000. Its totient is φ = 38817792.

The previous prime is 145437797. The next prime is 145437899. The reversal of 145437894 is 498734541.

145437894 is a `hidden beast` number, since 14 + 543 + 7 + 8 + 94 = 666.

It is a super-2 number, since 2×145437894² = 42304362022310472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145437899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188742 + ... + 189510.

It is an arithmetic number, because the mean of its divisors is an integer number (4004000).

Almost surely, 2^145437894 is an apocalyptic number.

145437894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145437894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192192000).

145437894 is an abundant number, since it is smaller than the sum of its proper divisors (238946106).

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

145437894 is a wasteful number, since it uses less digits than its factorization.

145437894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 879 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 145437894 is about 12059.7634305155. The cubic root of 145437894 is about 525.8871097012.

The spelling of 145437894 in words is "one hundred forty-five million, four hundred thirty-seven thousand, eight hundred ninety-four".