19550154 has 16 divisors (see below), whose sum is σ = 42108192. Its totient is φ = 6015408.

The previous prime is 19550137. The next prime is 19550159. The reversal of 19550154 is 45105591.

It is not an unprimeable number, because it can be changed into a prime (19550159) 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, 125244 + ... + 125399.

It is an arithmetic number, because the mean of its divisors is an integer number (2631762).

Almost surely, 2^19550154 is an apocalyptic number.

19550154 is an abundant number, since it is smaller than the sum of its proper divisors (22558038).

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

19550154 is a wasteful number, since it uses less digits than its factorization.

19550154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250661.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 19550154 is about 4421.5556086065. Note that the first 3 decimals coincide. The cubic root of 19550154 is about 269.3911934286.

The spelling of 19550154 in words is "nineteen million, five hundred fifty thousand, one hundred fifty-four".