145719798 has 16 divisors (see below), whose sum is σ = 333073920. Its totient is φ = 41634216.

The previous prime is 145719773. The next prime is 145719817. The reversal of 145719798 is 897917541.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145719798.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734718 + ... + 1734801.

It is an arithmetic number, because the mean of its divisors is an integer number (20817120).

Almost surely, 2^145719798 is an apocalyptic number.

145719798 is an abundant number, since it is smaller than the sum of its proper divisors (187354122).

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

145719798 is a wasteful number, since it uses less digits than its factorization.

145719798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469531.

The product of its digits is 635040, while the sum is 51.

The square root of 145719798 is about 12071.4455638088. The cubic root of 145719798 is about 526.2266681523.

The spelling of 145719798 in words is "one hundred forty-five million, seven hundred nineteen thousand, seven hundred ninety-eight".