145245918 has 16 divisors (see below), whose sum is σ = 305781120. Its totient is φ = 45867096.

The previous prime is 145245911. The next prime is 145245923. The reversal of 145245918 is 819542541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145245911) 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 7 ways as a sum of consecutive naturals, for example, 636930 + ... + 637157.

It is an arithmetic number, because the mean of its divisors is an integer number (19111320).

Almost surely, 2^145245918 is an apocalyptic number.

145245918 is an abundant number, since it is smaller than the sum of its proper divisors (160535202).

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

145245918 is a wasteful number, since it uses less digits than its factorization.

145245918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274111.

The product of its digits is 57600, while the sum is 39.

The square root of 145245918 is about 12051.8014421081. The cubic root of 145245918 is about 525.6556199234.

The spelling of 145245918 in words is "one hundred forty-five million, two hundred forty-five thousand, nine hundred eighteen".