145945458 has 72 divisors (see below), whose sum is σ = 339146496. Its totient is φ = 45309600.

The previous prime is 145945453. The next prime is 145945463. The reversal of 145945458 is 854549541.

145945458 is a `hidden beast` number, since 1 + 4 + 594 + 5 + 4 + 58 = 666.

It is an interprime number because it is at equal distance from previous prime (145945453) and next prime (145945463).

It is not an unprimeable number, because it can be changed into a prime (145945451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 469123 + ... + 469433.

It is an arithmetic number, because the mean of its divisors is an integer number (4710368).

Almost surely, 2^145945458 is an apocalyptic number.

145945458 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145945458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169573248).

145945458 is an abundant number, since it is smaller than the sum of its proper divisors (193201038).

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

145945458 is a wasteful number, since it uses less digits than its factorization.

145945458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 376 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 145945458 is about 12080.7887987499. The cubic root of 145945458 is about 526.4981642401.

The spelling of 145945458 in words is "one hundred forty-five million, nine hundred forty-five thousand, four hundred fifty-eight".