145609416 has 48 divisors (see below), whose sum is σ = 398443500. Its totient is φ = 48033792.

The previous prime is 145609363. The next prime is 145609417. The reversal of 145609416 is 614906541.

145609416 is a `hidden beast` number, since 1 + 4 + 5 + 609 + 41 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 138156516 + 7452900 = 11754^2 + 2730^2 .

It is a super-2 number, since 2×145609416² = 42404204055722112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (145609417) 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 11 ways as a sum of consecutive naturals, for example, 3441 + ... + 17408.

Almost surely, 2^145609416 is an apocalyptic number.

It is an amenable number.

145609416 is an abundant number, since it is smaller than the sum of its proper divisors (252834084).

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

145609416 is a wasteful number, since it uses less digits than its factorization.

145609416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20958 (or 20951 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 145609416 is about 12066.8726685915. The cubic root of 145609416 is about 526.0937632539.

The spelling of 145609416 in words is "one hundred forty-five million, six hundred nine thousand, four hundred sixteen".