145137916 has 48 divisors (see below), whose sum is σ = 321172992. Its totient is φ = 55742400.

The previous prime is 145137893. The next prime is 145137919. The reversal of 145137916 is 619731541.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145137919) 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 15 ways as a sum of consecutive naturals, for example, 18550 + ... + 25186.

It is an arithmetic number, because the mean of its divisors is an integer number (6691104).

Almost surely, 2^145137916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145137916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160586496).

145137916 is an abundant number, since it is smaller than the sum of its proper divisors (176035076).

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

145137916 is a wasteful number, since it uses less digits than its factorization.

145137916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6730 (or 6728 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 145137916 is about 12047.3198679208. The cubic root of 145137916 is about 525.5252985660.

The spelling of 145137916 in words is "one hundred forty-five million, one hundred thirty-seven thousand, nine hundred sixteen".