145549198 has 16 divisors (see below), whose sum is σ = 229840416. Its totient is φ = 68992000.

The previous prime is 145549193. The next prime is 145549199. The reversal of 145549198 is 891945541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145549193) 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, 8803 + ... + 19198.

It is an arithmetic number, because the mean of its divisors is an integer number (14365026).

Almost surely, 2^145549198 is an apocalyptic number.

145549198 is a deficient number, since it is larger than the sum of its proper divisors (84291218).

145549198 is a wasteful number, since it uses less digits than its factorization.

145549198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28139.

The product of its digits is 259200, while the sum is 46.

The square root of 145549198 is about 12064.3772321658. The cubic root of 145549198 is about 526.0212297522.

It can be divided in two parts, 1455 and 49198, that added together give a cube (50653 = 37³).

The spelling of 145549198 in words is "one hundred forty-five million, five hundred forty-nine thousand, one hundred ninety-eight".