19198045 has 16 divisors (see below), whose sum is σ = 23950080. Its totient is φ = 14761600.

The previous prime is 19197991. The next prime is 19198057. The reversal of 19198045 is 54089191.

19198045 = T₁₃₅ + T₁₃₆ + ... + T₄₈₉.

It is not a de Polignac number, because 19198045 - 2⁷ = 19197917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19197995 and 19198013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13896 + ... + 15214.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^19198045 is an apocalyptic number.

It is an amenable number.

19198045 is a deficient number, since it is larger than the sum of its proper divisors (4752035).

19198045 is a wasteful number, since it uses less digits than its factorization.

19198045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 19198045 is about 4381.5573715290. The cubic root of 19198045 is about 267.7640912423.

The spelling of 19198045 in words is "nineteen million, one hundred ninety-eight thousand, forty-five".