145523738 has 16 divisors (see below), whose sum is σ = 224718624. Its totient is φ = 70626960.

The previous prime is 145523731. The next prime is 145523759. The reversal of 145523738 is 837325541.

It is not an unprimeable number, because it can be changed into a prime (145523731) 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, 32453 + ... + 36663.

It is an arithmetic number, because the mean of its divisors is an integer number (14044914).

Almost surely, 2^145523738 is an apocalyptic number.

145523738 is a deficient number, since it is larger than the sum of its proper divisors (79194886).

145523738 is a wasteful number, since it uses less digits than its factorization.

145523738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4717.

The product of its digits is 100800, while the sum is 38.

The square root of 145523738 is about 12063.3220134422. The cubic root of 145523738 is about 525.9905567755.

The spelling of 145523738 in words is "one hundred forty-five million, five hundred twenty-three thousand, seven hundred thirty-eight".